remove outdated tests

tests/ImageSharp.Tests/Common/PixelDataPoolTests.cs

@@ -23,28 +23,6 @@ namespace ImageSharp.Tests
             Assert.True(pixels.Length >= 1024);
         }
 
-        [Fact]
-        public void PixelDataPool_Clean_RentsCleanArray()
-        {
-            for (int i = 16; i < 1024; i += 16)
-            {
-                Color[] pixels = PixelDataPool<Color>.Rent(i);
-
-                Assert.True(pixels.All(p => p == default(Color)));
-
-                PixelDataPool<Color>.Return(pixels);
-            }
-
-            for (int i = 16; i < 1024; i += 16)
-            {
-                Color[] pixels = PixelDataPool<Color>.Rent(i);
-
-                Assert.True(pixels.All(p => p == default(Color)));
-
-                PixelDataPool<Color>.Return(pixels);
-            }
-        }
-
         [Fact]
         public void PixelDataPoolDoesNotThrowWhenReturningNonPooled()
         {
@@ -55,23 +33,6 @@ namespace ImageSharp.Tests
             Assert.True(pixels.Length >= 1024);
         }
 
-        [Fact]
-        public void PixelDataPool_Clean_CleansRentedArray()
-        {
-            Color[] pixels = PixelDataPool<Color>.Rent(256);
-
-            for (int i = 0; i < pixels.Length; i++)
-            {
-                pixels[i] = Color.Azure;
-            }
-
-            Assert.True(pixels.All(p => p == Color.Azure));
-
-            PixelDataPool<Color>.Return(pixels);
-
-            Assert.True(pixels.All(p => p == default(Color)));
-        }
-
         [Theory]
         [InlineData(false)]
         [InlineData(true)]