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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def unflag_message(current):
 """ remove flag of a message .. code-block:: python # request: { 'view':'_zops_flag_message', 'key': key, } # response: { ' 'status': 'OK', 'code': 200, } """

    current.output = {'status': 'OK', 'code': 200}

    FlaggedMessage(current).objects.filter(user_id=current.user_id,
                                           message_id=current.input['key']).delete()