<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_entry(self, anime_id):
 """Removes an entry from the user's library. :param anime_id: The Anime ID or slug. """


        r = self._query_('libraries/%s/remove' % anime_id, 'POST')

        if not r.status_code == 200:
            raise ValueError