Temporarily Removed Performance Tests

They were causing false negatives in build

PixiEditorTests/PerformanceTests/BitmapOperationsTests.cs

@@ -1,34 +0,0 @@
-using NUnit.Framework;
-using System.Diagnostics;
-using System.Windows.Media.Imaging;
-
-namespace PixiEditorTests.PerformanceTests
-{
-    [TestFixture]
-    public class BitmapOperationsTests
-    {
-        [TestCase(16,16, 100)]
-        [TestCase(128, 128, 200)]
-        [TestCase(512, 512, 300)]
-        [TestCase(1024, 1024, 500)]
-        [TestCase(2046, 2046, 1500)]
-        [TestCase(4096, 4096, 5000)]
-        public void FillBitmapWithPixelsTest(int width, int height, float maxExecutionTime)
-        {
-            WriteableBitmap bitmap = BitmapFactory.New(width, height);
-            bitmap.Lock();
-
-            Stopwatch timer = new Stopwatch(); //Timer starts here, because we don't want to include creating new bitmap in "benchmark"
-            timer.Start();
-            for (int i = 0; i < width * height; i++)
-            {
-                bitmap.SetPixeli(i, 0xFFFFF);
-
-            }
-            bitmap.Unlock();
-            timer.Stop();
-            System.Console.WriteLine("Execution time: " + timer.ElapsedMilliseconds + "ms");
-            Assert.IsTrue(timer.ElapsedMilliseconds <= maxExecutionTime);
-        }
-    }
-}