Omit unnecessary error:false from Obsolete attributes. Fix message typo.

src/libraries/Microsoft.Extensions.Hosting.Abstractions/ref/Microsoft.Extensions.Hosting.Abstractions.cs

@@ -23,7 +23,7 @@ public virtual void Dispose() { }
         public virtual System.Threading.Tasks.Task StartAsync(System.Threading.CancellationToken cancellationToken) { throw null; }
         public virtual System.Threading.Tasks.Task StopAsync(System.Threading.CancellationToken cancellationToken) { throw null; }
     }
-    [System.ObsoleteAttribute("EnvironmentName has been deprecated. Use Microsoft.Extensions.Hosting.Environments instead.", false)]
+    [System.ObsoleteAttribute("EnvironmentName has been deprecated. Use Microsoft.Extensions.Hosting.Environments instead.")]
     public static partial class EnvironmentName
     {
         public static readonly string Development;
@@ -77,7 +77,7 @@ public static partial class HostingEnvironmentExtensions
         public static bool IsProduction(this Microsoft.Extensions.Hosting.IHostingEnvironment hostingEnvironment) { throw null; }
         public static bool IsStaging(this Microsoft.Extensions.Hosting.IHostingEnvironment hostingEnvironment) { throw null; }
     }
-    [System.ObsoleteAttribute("IApplicationLifetime has been deprecated. Use Microsoft.Extensions.Hosting.IHostApplicationLifetime instead.", false)]
+    [System.ObsoleteAttribute("IApplicationLifetime has been deprecated. Use Microsoft.Extensions.Hosting.IHostApplicationLifetime instead.")]
     public partial interface IApplicationLifetime
     {
         System.Threading.CancellationToken ApplicationStarted { get; }
@@ -121,7 +121,7 @@ public partial interface IHostEnvironment
         string ContentRootPath { get; set; }
         string EnvironmentName { get; set; }
     }
-    [System.ObsoleteAttribute("IHostingEnvironment has been deprecated. Use Microsoft.Extensions.Hosting.IHostEnvironment instead.", false)]
+    [System.ObsoleteAttribute("IHostingEnvironment has been deprecated. Use Microsoft.Extensions.Hosting.IHostEnvironment instead.")]
     public partial interface IHostingEnvironment
     {
         string ApplicationName { get; set; }

src/libraries/Microsoft.Extensions.Hosting.Abstractions/src/EnvironmentName.cs

@@ -10,7 +10,7 @@ namespace Microsoft.Extensions.Hosting
     ///  The recommended alternative is Microsoft.Extensions.Hosting.Environments.
     /// </para>
     /// </summary>
-    [System.Obsolete("EnvironmentName has been deprecated. Use Microsoft.Extensions.Hosting.Environments instead.", error: false)]
+    [System.Obsolete("EnvironmentName has been deprecated. Use Microsoft.Extensions.Hosting.Environments instead.")]
     public static class EnvironmentName
     {
         public static readonly string Development = "Development";

src/libraries/Microsoft.Extensions.Hosting.Abstractions/src/IApplicationLifetime.cs

@@ -13,7 +13,7 @@ namespace Microsoft.Extensions.Hosting
     ///  The recommended alternative is Microsoft.Extensions.Hosting.IHostApplicationLifetime.
     /// </para>
     /// </summary>
-    [Obsolete("IApplicationLifetime has been deprecated. Use Microsoft.Extensions.Hosting.IHostApplicationLifetime instead.", error: false)]
+    [Obsolete("IApplicationLifetime has been deprecated. Use Microsoft.Extensions.Hosting.IHostApplicationLifetime instead.")]
     public interface IApplicationLifetime
     {
         /// <summary>

src/libraries/Microsoft.Extensions.Hosting.Abstractions/src/IHostingEnvironment.cs

@@ -13,7 +13,7 @@ namespace Microsoft.Extensions.Hosting
     ///  The recommended alternative is Microsoft.Extensions.Hosting.IHostEnvironment.
     /// </para>
     /// </summary>
-    [Obsolete("IHostingEnvironment has been deprecated. Use Microsoft.Extensions.Hosting.IHostEnvironment instead.", error: false)]
+    [Obsolete("IHostingEnvironment has been deprecated. Use Microsoft.Extensions.Hosting.IHostEnvironment instead.")]
     public interface IHostingEnvironment
     {
         /// <summary>

src/libraries/Microsoft.Extensions.Logging.Console/ref/Microsoft.Extensions.Logging.Console.cs

@@ -44,7 +44,7 @@ public ConsoleFormatterOptions() { }
         public string TimestampFormat { get { throw null; } set { } }
         public bool UseUtcTimestamp { get { throw null; } set { } }
     }
-    [System.ObsoleteAttribute("ConsoleLoggerFormat has been deprecated.", false)]
+    [System.ObsoleteAttribute("ConsoleLoggerFormat has been deprecated.")]
     public enum ConsoleLoggerFormat
     {
         Default = 0,
@@ -53,17 +53,17 @@ public enum ConsoleLoggerFormat
     public partial class ConsoleLoggerOptions
     {
         public ConsoleLoggerOptions() { }
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.DisableColors has been deprecated. Use SimpleConsoleFormatterOptions.ColorBehavior instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.DisableColors has been deprecated. Use SimpleConsoleFormatterOptions.ColorBehavior instead.")]
         public bool DisableColors { get { throw null; } set { } }
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.Format has been deprecated. Use ConsoleLoggerOptions.FormatterName instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.Format has been deprecated. Use ConsoleLoggerOptions.FormatterName instead.")]
         public Microsoft.Extensions.Logging.Console.ConsoleLoggerFormat Format { get { throw null; } set { } }
         public string FormatterName { get { throw null; } set { } }
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.IncludeScopes has been deprecated. Use ConsoleFormatterOptions.IncludeScopes instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.IncludeScopes has been deprecated. Use ConsoleFormatterOptions.IncludeScopes instead.")]
         public bool IncludeScopes { get { throw null; } set { } }
         public Microsoft.Extensions.Logging.LogLevel LogToStandardErrorThreshold { get { throw null; } set { } }
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.TimestampFormat has been deprecated. Use ConsoleFormatterOptions.TimestampFormat instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.TimestampFormat has been deprecated. Use ConsoleFormatterOptions.TimestampFormat instead.")]
         public string TimestampFormat { get { throw null; } set { } }
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.UseUtcTimestamp has been deprecated. Use ConsoleFormatterOptions.UseUtcTimestamp instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.UseUtcTimestamp has been deprecated. Use ConsoleFormatterOptions.UseUtcTimestamp instead.")]
         public bool UseUtcTimestamp { get { throw null; } set { } }
     }
     [System.Runtime.Versioning.UnsupportedOSPlatform("browser")]

src/libraries/Microsoft.Extensions.Logging.Console/src/ConsoleLoggerFormat.cs

@@ -6,7 +6,7 @@ namespace Microsoft.Extensions.Logging.Console
     /// <summary>
     /// Format of <see cref="ConsoleLogger" /> messages.
     /// </summary>
-    [System.ObsoleteAttribute("ConsoleLoggerFormat has been deprecated.", false)]
+    [System.ObsoleteAttribute("ConsoleLoggerFormat has been deprecated.")]
     public enum ConsoleLoggerFormat
     {
         /// <summary>

src/libraries/Microsoft.Extensions.Logging.Console/src/ConsoleLoggerOptions.cs

@@ -13,15 +13,15 @@ public class ConsoleLoggerOptions
         /// <summary>
         /// Disables colors when <see langword="true" />.
         /// </summary>
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.DisableColors has been deprecated. Use SimpleConsoleFormatterOptions.ColorBehavior instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.DisableColors has been deprecated. Use SimpleConsoleFormatterOptions.ColorBehavior instead.")]
         public bool DisableColors { get; set; }
 
 #pragma warning disable CS0618
         private ConsoleLoggerFormat _format = ConsoleLoggerFormat.Default;
         /// <summary>
         /// Gets or sets log message format. Defaults to <see cref="ConsoleLoggerFormat.Default" />.
         /// </summary>
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.Format has been deprecated. Use ConsoleLoggerOptions.FormatterName instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.Format has been deprecated. Use ConsoleLoggerOptions.FormatterName instead.")]
         public ConsoleLoggerFormat Format
         {
             get => _format;
@@ -44,7 +44,7 @@ public ConsoleLoggerFormat Format
         /// <summary>
         /// Includes scopes when <see langword="true" />.
         /// </summary>
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.IncludeScopes has been deprecated. Use ConsoleFormatterOptions.IncludeScopes instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.IncludeScopes has been deprecated. Use ConsoleFormatterOptions.IncludeScopes instead.")]
         public bool IncludeScopes { get; set; }
 
         /// <summary>
@@ -55,13 +55,13 @@ public ConsoleLoggerFormat Format
         /// <summary>
         /// Gets or sets format string used to format timestamp in logging messages. Defaults to <c>null</c>.
         /// </summary>
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.TimestampFormat has been deprecated. Use ConsoleFormatterOptions.TimestampFormat instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.TimestampFormat has been deprecated. Use ConsoleFormatterOptions.TimestampFormat instead.")]
         public string TimestampFormat { get; set; }
 
         /// <summary>
         /// Gets or sets indication whether or not UTC timezone should be used to for timestamps in logging messages. Defaults to <c>false</c>.
         /// </summary>
-        [System.ObsoleteAttribute("ConsoleLoggerOptions.UseUtcTimestamp has been deprecated. Use ConsoleFormatterOptions.UseUtcTimestamp instead.", false)]
+        [System.ObsoleteAttribute("ConsoleLoggerOptions.UseUtcTimestamp has been deprecated. Use ConsoleFormatterOptions.UseUtcTimestamp instead.")]
         public bool UseUtcTimestamp { get; set; }
     }
 }

src/libraries/System.Data.Common/ref/System.Data.Common.cs

@@ -658,10 +658,10 @@ public enum DataSetDateTime
         Utc = 4,
     }
     [System.AttributeUsageAttribute(System.AttributeTargets.All)]
-    [System.ObsoleteAttribute("DataSysDescriptionAttribute has been deprecated and is not supported.", false)]
+    [System.ObsoleteAttribute("DataSysDescriptionAttribute has been deprecated and is not supported.")]
     public partial class DataSysDescriptionAttribute : System.ComponentModel.DescriptionAttribute
     {
-        [System.ObsoleteAttribute("DataSysDescriptionAttribute has been deprecated and is not supported.", false)]
+        [System.ObsoleteAttribute("DataSysDescriptionAttribute has been deprecated and is not supported.")]
         public DataSysDescriptionAttribute(string description) { }
         public override string Description { get { throw null; } }
     }

src/libraries/System.Data.Common/src/System/Data/DataSysAttribute.cs

@@ -11,15 +11,15 @@ namespace System.Data
     /// the member.
     /// </summary>
     [AttributeUsage(AttributeTargets.All)]
-    [Obsolete("DataSysDescriptionAttribute has been deprecated and is not supported.", false)]
+    [Obsolete("DataSysDescriptionAttribute has been deprecated and is not supported.")]
     public class DataSysDescriptionAttribute : DescriptionAttribute
     {
         private bool _replaced;
 
         /// <summary>
         /// Constructs a new sys description.
         /// </summary>
-        [Obsolete("DataSysDescriptionAttribute has been deprecated and is not supported.", false)]
+        [Obsolete("DataSysDescriptionAttribute has been deprecated and is not supported.")]
         public DataSysDescriptionAttribute(string description) : base(description)
         {
         }

src/libraries/System.Data.Odbc/ref/System.Data.Odbc.cs

@@ -311,7 +311,7 @@ internal OdbcParameterCollection() { }
         public System.Data.Odbc.OdbcParameter Add(string? parameterName, System.Data.Odbc.OdbcType odbcType, int size) { throw null; }
         public System.Data.Odbc.OdbcParameter Add(string? parameterName, System.Data.Odbc.OdbcType odbcType, int size, string? sourceColumn) { throw null; }
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-        [System.ObsoleteAttribute("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.", false)]
+        [System.ObsoleteAttribute("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.")]
         public System.Data.Odbc.OdbcParameter Add(string? parameterName, object? value) { throw null; }
         public override void AddRange(System.Array values) { }
         public void AddRange(System.Data.Odbc.OdbcParameter[] values) { }

src/libraries/System.Data.Odbc/src/System/Data/Odbc/OdbcParameterCollection.cs

@@ -64,7 +64,7 @@ public OdbcParameter Add(OdbcParameter value)
         }
 
         [EditorBrowsableAttribute(EditorBrowsableState.Never)]
-        [ObsoleteAttribute("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.", false)] // 79027
+        [ObsoleteAttribute("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.")] // 79027
         public OdbcParameter Add(string? parameterName, object? value)
         {
             // MDAC 59206

src/libraries/System.Data.OleDb/src/OleDbParameterCollection.cs

@@ -65,7 +65,7 @@ public OleDbParameter Add(OleDbParameter value)
         }
 
         [EditorBrowsable(EditorBrowsableState.Never)]
-        [Obsolete("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.", false)]
+        [Obsolete("Add(String parameterName, Object value) has been deprecated. Use AddWithValue(String parameterName, Object value) instead.")]
         public OleDbParameter Add(string? parameterName, object? value)
         {
             return Add(new OleDbParameter(parameterName, value));

src/libraries/System.Diagnostics.EventLog/ref/System.Diagnostics.EventLog.cs

@@ -514,7 +514,7 @@ public enum StandardEventKeywords : long
         WdiDiagnostic = (long)1125899906842624,
         Sqm = (long)2251799813685248,
         AuditFailure = (long)4503599627370496,
-        [System.ObsoleteAttribute("StandardEventKeywords.CorrelationHint has an incorrect value and has been deprecated. Use CorrelationHint2 instead.", false)]
+        [System.ObsoleteAttribute("StandardEventKeywords.CorrelationHint has an incorrect value and has been deprecated. Use CorrelationHint2 instead.")]
         CorrelationHint = (long)4503599627370496,
         AuditSuccess = (long)9007199254740992,
         CorrelationHint2 = (long)18014398509481984,

src/libraries/System.Diagnostics.EventLog/src/System/Diagnostics/Reader/Winmeta.cs

@@ -135,7 +135,7 @@ public enum StandardEventKeywords : long
         /// <summary>
         /// Incorrect CorrelationHint value mistakenly shipped in .NET 3.5. Don't use: duplicates AuditFailure.
         /// </summary>
-        [Obsolete("StandardEventKeywords.CorrelationHint has an incorrect value. Use CorrelationHint2 instead.", false)]
+        [Obsolete("StandardEventKeywords.CorrelationHint has an incorrect value. Use CorrelationHint2 instead.")]
         CorrelationHint = 0x10000000000000,
         /// <summary>
         /// Transfer events where the related Activity ID is a computed value and not a GUID

src/libraries/System.Private.CoreLib/src/System/AppDomain.cs

@@ -211,7 +211,7 @@ public static long MonitoringSurvivedProcessMemorySize
 
         public long MonitoringTotalAllocatedMemorySize => GC.GetTotalAllocatedBytes(precise: false);
 
-        [Obsolete("AppDomain.GetCurrentThreadId has been deprecated because it does not provide a stable Id when managed threads are running on fibers (aka lightweight threads). To get a stable identifier for a managed thread, use the ManagedThreadId property on Thread instead.", false)]
+        [Obsolete("AppDomain.GetCurrentThreadId has been deprecated because it does not provide a stable Id when managed threads are running on fibers (aka lightweight threads). To get a stable identifier for a managed thread, use the ManagedThreadId property on Thread instead.")]
         public static int GetCurrentThreadId() => Environment.CurrentManagedThreadId;
 
         public bool ShadowCopyFiles => false;

src/libraries/System.Private.CoreLib/src/System/Threading/Thread.cs

@@ -447,13 +447,13 @@ public static void ResetAbort()
             throw new PlatformNotSupportedException(SR.PlatformNotSupported_ThreadAbort);
         }
 
-        [Obsolete("Thread.Suspend has been deprecated. Use other classes in System.Threading, such as Monitor, Mutex, Event, and Semaphore, to synchronize Threads or protect resources.", false)]
+        [Obsolete("Thread.Suspend has been deprecated. Use other classes in System.Threading, such as Monitor, Mutex, Event, and Semaphore, to synchronize Threads or protect resources.")]
         public void Suspend()
         {
             throw new PlatformNotSupportedException(SR.PlatformNotSupported_ThreadSuspend);
         }
 
-        [Obsolete("Thread.Resume has been deprecated. Use other classes in System.Threading, such as Monitor, Mutex, Event, and Semaphore, to synchronize Threads or protect resources.", false)]
+        [Obsolete("Thread.Resume has been deprecated. Use other classes in System.Threading, such as Monitor, Mutex, Event, and Semaphore, to synchronize Threads or protect resources.")]
         public void Resume()
         {
             throw new PlatformNotSupportedException(SR.PlatformNotSupported_ThreadSuspend);
@@ -473,7 +473,7 @@ public static void EndThreadAffinity() { }
         public static object? GetData(LocalDataStoreSlot slot) => LocalDataStore.GetData(slot);
         public static void SetData(LocalDataStoreSlot slot, object? data) => LocalDataStore.SetData(slot, data);
 
-        [Obsolete("The ApartmentState property has been deprecated. Use GetApartmentState, SetApartmentState or TrySetApartmentState.", false)]
+        [Obsolete("The ApartmentState property has been deprecated. Use GetApartmentState, SetApartmentState or TrySetApartmentState.")]
         public ApartmentState ApartmentState
         {
             get => GetApartmentState();

src/libraries/System.Private.Xml/src/System/Xml/IApplicationResourceStreamResolver.cs

@@ -8,7 +8,7 @@
 namespace System.Xml
 {
     // we must specify the error flag as false so that we can typeforward this type without hitting a compile error.
-    [Obsolete("This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.", false)]
+    [Obsolete("This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.")]
     [EditorBrowsable(EditorBrowsableState.Never)]
     public interface IApplicationResourceStreamResolver
     {

src/libraries/System.Runtime.InteropServices/src/System/Runtime/InteropServices/IDispatchImplAttribute.cs

@@ -4,7 +4,7 @@
 namespace System.Runtime.InteropServices
 {
     [AttributeUsage(AttributeTargets.Class | AttributeTargets.Assembly, Inherited = false)]
-    [Obsolete("IDispatchImplAttribute has deprecated and is not supported.", error: false)]
+    [Obsolete("IDispatchImplAttribute has been deprecated and is not supported.")]
     public sealed class IDispatchImplAttribute : Attribute
     {
         public IDispatchImplAttribute(short implType) : this((IDispatchImplType)implType)

src/libraries/System.Runtime.InteropServices/src/System/Runtime/InteropServices/IDispatchImplType.cs

@@ -3,7 +3,7 @@
 
 namespace System.Runtime.InteropServices
 {
-    [Obsolete("IDispatchImplAttribute and IDispatchImplType have been deprecated and are no longer supported.", error: false)]
+    [Obsolete("IDispatchImplAttribute and IDispatchImplType have been deprecated and are no longer supported.")]
     public enum IDispatchImplType
     {
         CompatibleImpl = 2,

src/libraries/System.Runtime.InteropServices/src/System/Runtime/InteropServices/SetWin32ContextInIDispatchAttribute.cs

@@ -3,7 +3,7 @@
 
 namespace System.Runtime.InteropServices
 {
-    [Obsolete("SetWin32ContextInIDispatchAttribute has been deprecated. Application Domains no longer respect Activation Context boundaries in IDispatch calls.", error: false)]
+    [Obsolete("SetWin32ContextInIDispatchAttribute has been deprecated. Application Domains no longer respect Activation Context boundaries in IDispatch calls.")]
     [AttributeUsage(AttributeTargets.Assembly, Inherited = false)]
     public sealed class SetWin32ContextInIDispatchAttribute : Attribute
     {

src/libraries/System.Runtime/ref/System.Runtime.cs

@@ -188,7 +188,7 @@ public void ClearShadowCopyPath() { }
         public int ExecuteAssemblyByName(string assemblyName) { throw null; }
         public int ExecuteAssemblyByName(string assemblyName, params string?[]? args) { throw null; }
         public System.Reflection.Assembly[] GetAssemblies() { throw null; }
-        [System.ObsoleteAttribute("AppDomain.GetCurrentThreadId has been deprecated because it does not provide a stable Id when managed threads are running on fibers (aka lightweight threads). To get a stable identifier for a managed thread, use the ManagedThreadId property on Thread.", false)]
+        [System.ObsoleteAttribute("AppDomain.GetCurrentThreadId has been deprecated because it does not provide a stable Id when managed threads are running on fibers (aka lightweight threads). To get a stable identifier for a managed thread, use the ManagedThreadId property on Thread.")]
         public static int GetCurrentThreadId() { throw null; }
         public object? GetData(string name) { throw null; }
         public bool? IsCompatibilitySwitchSet(string value) { throw null; }