Remove nolint annotations for unix errno comparisons

golangci-lint v1.54.2 comes with errorlint v1.4.4, which contains
the fix [1] whitelisting all errno comparisons for errors coming from
x/sys/unix. Thus, these annotations are no longer necessary. Remove
those.

Except, the errors that do not come directly from a function in unix
package still need to be annotated (see [2]).

[1] polyfloyd/go-errorlint#47
[2] polyfloyd/go-errorlint#55
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

go-selinux/selinux_linux.go

@@ -132,7 +132,7 @@ func verifySELinuxfsMount(mnt string) bool {
 		if err == nil {
 			break
 		}
-		if err == unix.EAGAIN || err == unix.EINTR { //nolint:errorlint // unix errors are bare
+		if err == unix.EAGAIN || err == unix.EINTR {
 			continue
 		}
 		return false
@@ -263,7 +263,7 @@ func isProcHandle(fh *os.File) error {
 		if err == nil {
 			break
 		}
-		if err != unix.EINTR { //nolint:errorlint // unix errors are bare
+		if err != unix.EINTR {
 			return &os.PathError{Op: "fstatfs", Path: fh.Name(), Err: err}
 		}
 	}
@@ -328,7 +328,7 @@ func lSetFileLabel(fpath string, label string) error {
 		if err == nil {
 			break
 		}
-		if err != unix.EINTR { //nolint:errorlint // unix errors are bare
+		if err != unix.EINTR {
 			return &os.PathError{Op: "lsetxattr", Path: fpath, Err: err}
 		}
 	}
@@ -347,7 +347,7 @@ func setFileLabel(fpath string, label string) error {
 		if err == nil {
 			break
 		}
-		if err != unix.EINTR { //nolint:errorlint // unix errors are bare
+		if err != unix.EINTR {
 			return &os.PathError{Op: "setxattr", Path: fpath, Err: err}
 		}
 	}

go-selinux/xattrs_linux.go

@@ -31,7 +31,7 @@ func lgetxattr(path, attr string) ([]byte, error) {
 func doLgetxattr(path, attr string, dest []byte) (int, error) {
 	for {
 		sz, err := unix.Lgetxattr(path, attr, dest)
-		if err != unix.EINTR { //nolint:errorlint // unix errors are bare
+		if err != unix.EINTR {
 			return sz, err
 		}
 	}
@@ -64,7 +64,7 @@ func getxattr(path, attr string) ([]byte, error) {
 func dogetxattr(path, attr string, dest []byte) (int, error) {
 	for {
 		sz, err := unix.Getxattr(path, attr, dest)
-		if err != unix.EINTR { //nolint:errorlint // unix errors are bare
+		if err != unix.EINTR {
 			return sz, err
 		}
 	}