Use single Block8x8F.TransponseInto test

tests/ImageSharp.Tests/Formats/Jpg/Block8x8FTests.cs

@@ -5,10 +5,9 @@
 // #define BENCHMARKING
 using System;
 using System.Diagnostics;
-
 using SixLabors.ImageSharp.Formats.Jpeg.Components;
 using SixLabors.ImageSharp.Tests.Formats.Jpg.Utils;
-
+using SixLabors.ImageSharp.Tests.TestUtilities;
 using Xunit;
 using Xunit.Abstractions;
 
@@ -163,7 +162,9 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
         }
 
         [Fact]
-        public void TransposeIntoFallback()
+        public void TransposeInto()
+        {
+            static void RunTest()
             {
                 float[] expected = Create8x8FloatData();
                 ReferenceImplementations.Transpose8x8(expected);
@@ -172,7 +173,7 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
                 source.LoadFrom(Create8x8FloatData());
 
                 var dest = default(Block8x8F);
-            source.TransposeIntoFallback(ref dest);
+                source.TransposeInto(ref dest);
 
                 float[] actual = new float[64];
                 dest.ScaledCopyTo(actual);
@@ -180,25 +181,10 @@ namespace SixLabors.ImageSharp.Tests.Formats.Jpg
                 Assert.Equal(expected, actual);
             }
 
-#if SUPPORTS_RUNTIME_INTRINSICS
+            FeatureTestRunner.RunWithHwIntrinsicsFeature(
-        [Fact]
+                RunTest,
-        public void TransposeIntoAvx()
+                HwIntrinsics.AllowAll | HwIntrinsics.DisableAVX);
-        {
-            float[] expected = Create8x8FloatData();
-            ReferenceImplementations.Transpose8x8(expected);
-
-            var source = default(Block8x8F);
-            source.LoadFrom(Create8x8FloatData());
-
-            var dest = default(Block8x8F);
-            source.TransposeIntoAvx(ref dest);
-
-            float[] actual = new float[64];
-            dest.ScaledCopyTo(actual);
-
-            Assert.Equal(expected, actual);
         }
-#endif
 
         private class BufferHolder
         {