[mono] Fix several nits (#32529)

* Remove the commented code

* Remove unused nint/nuint aliases from PNSE version of Utf8String

diff --git a/src/libraries/System.ComponentModel.Composition/tests/System/ComponentModel/Composition/AttributedModel/AllowNonPublicCompositionTests.cs b/src/libraries/System.ComponentModel.Composition/tests/System/ComponentModel/Composition/AttributedModel/AllowNonPublicCompositionTests.cs
index 7eb4615..f0d3462 100644 (file)
--- a/src/libraries/System.ComponentModel.Composition/tests/System/ComponentModel/Composition/AttributedModel/AllowNonPublicCompositionTests.cs
+++ b/src/libraries/System.ComponentModel.Composition/tests/System/ComponentModel/Composition/AttributedModel/AllowNonPublicCompositionTests.cs
@@ -8,7 +8,6 @@ using Xunit;
 
 namespace System.ComponentModel.Composition
 {
-    // [ActiveIssue("https://github.com/mono/mono/issues/16417", TestRuntimes.Mono)]
     public class AllowNonPublicCompositionTests
     {
         [Fact]

diff --git a/src/mono/netcore/System.Private.CoreLib/src/System/Utf8String.cs b/src/mono/netcore/System.Private.CoreLib/src/System/Utf8String.cs
index ebb787a..48a7cae 100644 (file)
--- a/src/mono/netcore/System.Private.CoreLib/src/System/Utf8String.cs
+++ b/src/mono/netcore/System.Private.CoreLib/src/System/Utf8String.cs
@@ -11,15 +11,6 @@ using System.Text;
 using System.Text.Unicode;
 using Internal.Runtime.CompilerServices;
 
-#pragma warning disable SA1121 // explicitly using type aliases instead of built-in types
-#if TARGET_64BIT
-using nint = System.Int64;
-using nuint = System.UInt64;
-#else
-using nint = System.Int32;
-using nuint = System.UInt32;
-#endif
-
 namespace System
 {
     /// <summary>