removed 'EnumerationReturnsReadOnlySpans'

Author: dragon7307

tests/unit-tests/Tests/ReadOnlySpan/Split/SplitAny/Tests.cs

@@ -6,21 +6,6 @@ public static partial class ReadOnlySpanSplitTests
     {
         public sealed partial class SplitAny
         {
-            //            [Fact]
-            //            public void EnumerationReturnsReadOnlySpans()
-            //            {
-            //#pragma warning disable CS0183 // 'is' expression's given expression is always of the provided type
-            //                foreach(var span in "abaca".AsSpan().SplitAny(['b', 'c']))
-            //                {
-            //                    Assert.True(span is ReadOnlySpan<char>);
-            //                }
-
-            //                foreach(var span in "abaca".AsSpan().SplitAny(['b', 'c'], 10))
-            //                {
-            //                    Assert.True(span is ReadOnlySpan<char>);
-            //                }
-            //#pragma warning restore CS0183 // 'is' expression's given expression is always of the provided type
-            //            }
 
             [Fact]
             public void EmptySourceResultInEmptySpan()

tests/unit-tests/Tests/ReadOnlySpan/Split/SplitSequence/Tests.cs

@@ -6,21 +6,6 @@ public static partial class ReadOnlySpanSplitTests
     {
         public sealed partial class SplitSequence
         {
-            //            [Fact]
-            //            public void EnumerationReturnsReadOnlySpans()
-            //            {
-            //#pragma warning disable CS0183 // 'is' expression's given expression is always of the provided type
-            //                foreach(var span in "abca".AsSpan().Split(['b', 'c']))
-            //                {
-            //                    Assert.True(span is ReadOnlySpan<char>);
-            //                }
-
-            //                foreach(var span in "abca".AsSpan().Split(['b', 'c'], 10))
-            //                {
-            //                    Assert.True(span is ReadOnlySpan<char>);
-            //                }
-            //#pragma warning restore CS0183 // 'is' expression's given expression is always of the provided type
-            //            }
 
             [Fact]
             public void EmptySourceResultInEmptySpan()