Revert "Merge branch 'splitcontainer' of tig:tznind/gui.cs into tznind-splitcontainer"

This reverts commit dc4fe69626b4745145f9e71012a1837fb4e22117, reversing
changes made to ccadf81b4d695c76b1047e0858bcceb5cd45b147.

UnitTests/Views/TileViewTests.cs

@@ -2096,93 +2096,6 @@ namespace Terminal.Gui.ViewTests {
 		}
 
 
-		[Fact,AutoInitShutdown]
-		public void TestDisposal_NoEarlyDisposalsOfUsersViews_DuringRebuildForTileCount ()
-		{
-			var tv = GetTileView (20,10);
-
-			var myReusableView = new DisposeCounter ();
-
-			// I want my view in the first tile
-			tv.Tiles.ElementAt (0).View.Add (myReusableView);
-			Assert.Equal (0, myReusableView.DisposalCount);
-
-			// I've changed my mind, I want 3 tiles now
-			tv.RebuildForTileCount (3);
-
-			// but I still want my view in the first tile
-			tv.Tiles.ElementAt (0).View.Add (myReusableView);
-			Assert.Multiple (
-				()=>Assert.Equal (0, myReusableView.DisposalCount)
-				,()=> {
-					tv.Dispose ();
-					Assert.Equal (1, myReusableView.DisposalCount); 
-				});
-		}
-		[Fact, AutoInitShutdown]
-		public void TestDisposal_NoEarlyDisposalsOfUsersViews_DuringInsertTile ()
-		{
-			var tv = GetTileView (20, 10);
-
-			var myReusableView = new DisposeCounter ();
-
-			// I want my view in the first tile
-			tv.Tiles.ElementAt (0).View.Add (myReusableView);
-			Assert.Equal (0, myReusableView.DisposalCount);
-
-			// I've changed my mind, I want 3 tiles now
-			tv.InsertTile (0);
-			tv.InsertTile (2);
-
-			// but I still want my view in the first tile
-			tv.Tiles.ElementAt (0).View.Add (myReusableView);
-			Assert.Multiple (
-				() => Assert.Equal (0, myReusableView.DisposalCount)
-				, () => {
-					tv.Dispose ();
-
-					// TODO seems to be double disposed ?!
-					Assert.True (myReusableView.DisposalCount >= 1);
-				});
-		}
-		[Theory, AutoInitShutdown]
-		[InlineData(0)]
-		[InlineData (1)]
-		public void TestDisposal_NoEarlyDisposalsOfUsersViews_DuringRemoveTile(int idx)
-		{
-			var tv = GetTileView (20, 10);
-
-			var myReusableView = new DisposeCounter ();
-
-			// I want my view in the first tile
-			tv.Tiles.ElementAt (0).View.Add (myReusableView);
-			Assert.Equal (0, myReusableView.DisposalCount);
-
-			tv.RemoveTile (idx);
-
-			// but I still want my view in the first tile
-			tv.Tiles.ElementAt (0).View.Add (myReusableView);
-			Assert.Multiple (
-				() => Assert.Equal (0, myReusableView.DisposalCount)
-				, () => {
-					tv.Dispose ();
-
-					// TODO seems to be double disposed ?!
-					Assert.True (myReusableView.DisposalCount >= 1);
-				});
-		}
-
-		private class DisposeCounter : View
-		{
-			public int DisposalCount;
-			protected override void Dispose (bool disposing)
-			{
-				DisposalCount++;
-				base.Dispose (disposing);
-			}
-
-		}
-
 		/// <summary>
 		/// Creates a vertical orientation root container with left pane split into
 		/// two (with horizontal splitter line).