Unsticky this post.

        :returns: The json response from the server

def unsticky(self):
        """Unsticky this post.

        :returns: The json response from the server

        """
        url = self.reddit_session.config['sticky_submission']
        data = {'id': self.fullname, 'state': False}
        return self.reddit_session.request_json(url, data=data)