Get rid of warning W1075 in RAD Studio 12.2

Author: joachimmarder

Source/VirtualTrees.Types.pas

@@ -144,7 +144,7 @@ interface
   TVTPaintContext = HDC;
   TVTBrush = HBRUSH;
 {$ENDIF}
-  TColumnIndex = type Integer;
+  TColumnIndex = Integer;
   TColumnPosition = type Cardinal;
   PCardinal = ^Cardinal;