remove_display_switch_callback - Removes a switching notification callback.
Allegro game programming library.
void remove_display_switch_callback(void (*cb)());
Removes a notification callback that was previously installed by calling
set_display_switch_callback(). All the callbacks will automatically be removed
when you call set_display_switch_mode(). You can safely call this function
even if the callback you want to remove is not installed.