Revert "Resize the shell when the mode is switched"

This breaks panel resizing as it doesn't account for output rotation.

https://bugs.freedesktop.org/show_bug.cgi?id=70249

This reverts commit a356f7b1ef.

clients/desktop-shell.c

@@ -1160,13 +1160,6 @@ output_handle_mode(void *data,
 		   int height,
 		   int refresh)
 {
-	struct output *output = (struct output *)data;
-
-	if (flags & WL_OUTPUT_MODE_CURRENT) {
-		window_schedule_resize(output->panel->window, width, 32);
-		window_schedule_resize(output->background->window,
-				       width, height);
-	}
 }
 
 static void