bool al_remove_menu_item(ALLEGRO_MENU *menu, int pos)
Removes the specified item from the menu and destroys it. If the item contains a sub-menu, it too is destroyed. Any references to it are invalidated. If you want to preserve that sub-menu, you should first make a copy with al_clone_menu(3alleg5).
This is safe to call on a menu that is currently being displayed.
Returns true if an item was removed.