Drops all the task in the queue.

        :param queue_name: The name of the queue. Usually handled by the
            ``Gator`` instance.
        :type queue_name: string

def drop_all(self, queue_name):
        """
        Drops all the task in the queue.

        :param queue_name: The name of the queue. Usually handled by the
            ``Gator`` instance.
        :type queue_name: string
        """
        task_ids = self.conn.lrange(queue_name, 0, -1)

        for task_id in task_ids:
            self.conn.delete(task_id)

        self.conn.delete(queue_name)