Fixes for static analysis.

processing/src/main/java/org/apache/druid/java/util/common/concurrent/ScheduledExecutors.java

@@ -64,16 +64,6 @@ public Signal call()
     );
   }
 
-  /**
-   * Run callable repeatedly with the given delay between calls, after the given
-   * initial delay, until it returns Signal.STOP. Exceptions are caught and
-   * logged as errors.
-   */
-  public static void scheduleWithFixedDelay(ScheduledExecutorService exec, Duration delay, Callable<Signal> callable)
-  {
-    scheduleWithFixedDelay(exec, delay, delay, callable);
-  }
-
   /**
    * Run callable repeatedly with the given delay between calls, until it
    * returns Signal.STOP. Exceptions are caught and logged as errors.

processing/src/main/java/org/apache/druid/segment/Metadata.java

@@ -108,11 +108,6 @@ public Metadata putAll(@Nullable Map<String, Object> other)
     return this;
   }
 
-  public Object get(String key)
-  {
-    return container.get(key);
-  }
-
   // arbitrary key-value pairs from the metadata just follow the semantics of last one wins if same
   // key exists in multiple input Metadata containers
   // for others e.g. Aggregators, appropriate merging is done

processing/src/main/java/org/apache/druid/segment/incremental/IncrementalIndexAddResult.java

@@ -97,10 +97,4 @@ public boolean isRowAdded()
   {
     return reasonOfNotAdded == null && parseException == null;
   }
-
-  @Nullable
-  public String getReasonOfNotAdded()
-  {
-    return reasonOfNotAdded;
-  }
 }

server/src/main/java/org/apache/druid/indexing/overlord/IndexerMetadataStorageCoordinator.java

@@ -278,7 +278,7 @@ SegmentPublishResult commitSegmentsAndMetadata(
       Set<DataSegment> segments,
       @Nullable DataSourceMetadata startMetadata,
       @Nullable DataSourceMetadata endMetadata
-  ) throws IOException;
+  );
 
   /**
    * Commits segments created by an APPEND task. This method also handles segment

server/src/main/java/org/apache/druid/metadata/IndexerSQLMetadataStorageCoordinator.java

@@ -413,7 +413,7 @@ public SegmentPublishResult commitSegmentsAndMetadata(
       final Set<DataSegment> segments,
       @Nullable final DataSourceMetadata startMetadata,
       @Nullable final DataSourceMetadata endMetadata
-  ) throws IOException
+  )
   {
     if (segments.isEmpty()) {
       throw new IllegalArgumentException("segment set must not be empty");