window: Remove meta_window_get_rect

It's a bad API that returns weird results you wouldn't expect.

src/core/window.c

@@ -6944,20 +6944,6 @@ meta_window_is_skip_taskbar (MetaWindow *window)
   return window->skip_taskbar;
 }
 
-/**
- * meta_window_get_rect:
- * @window: a #MetaWindow
- *
- * Gets the rectangle that bounds @window, ignoring any window decorations.
- *
- * Return value: (transfer none): the #MetaRectangle for the window
- */
-MetaRectangle *
-meta_window_get_rect (MetaWindow *window)
-{
-  return &window->rect;
-}
-
 /**
  * meta_window_get_screen:
  * @window: a #MetaWindow