updated tree deletion method

Still not complete but will occasionally delete correctly, seems to have more issues with items near the top of the tree

C#/Program.cs

@@ -112,17 +112,16 @@ Console.WriteLine("Hello, World!");
 
 Tree<int> tree = new Tree<int>();
 
-tree.Add(4);
 tree.Add(5);
-tree.Add(7);
-tree.Add(6);
-tree.Add(2);
+tree.Add(4);
 tree.Add(3);
+tree.Add(2);
 tree.Add(1);
-tree.Add(8);
-tree.Add(7);
+tree.Add(0);
 
-var x = tree.Delete(1);
+
+var x = tree.Delete(3);
+//tree.Delete(5);
 
 var l = tree.Inorder(null);