<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def remove_callback_for_action(self, action, callback):
 """ Remove a callback for a specific action This is mainly for cleanup purposes or a plugin that replaces a GUI widget. :param str action: the cation of which the callback is going to be remove :param callback: the callback to be removed """

        if action in self.__action_to_callbacks:
            if callback in self.__action_to_callbacks[action]:
                self.__action_to_callbacks[action].remove(callback)