sync back Render, remove some stuff fix up some tests and other graphic objects

Author: LoneWandererProductions

CommonExtendedObjectsTests/IntListTests.cs

@@ -288,7 +288,6 @@ public void RemoveAtMultipleElementsWorksCorrectly()
             Assert.AreEqual(9, list[5]);
         }
 
-
         /// <summary>
         ///     Benchmarks the add performance.
         /// </summary>

CommonLibraryGuiTests/CommonCtrl.cs

@@ -44,15 +44,6 @@ public void Basic()
             _ = new Thumbnails();
             _ = new NativeBitmapDisplay();
 
-            try
-            {
-                _ = new OpenTkControl();
-            }
-            catch (Exception e)
-            {
-                Trace.WriteLine(e);
-            }
-
             Assert.Pass();
         }