def remove(self, elem):
        """Remove a requirement.

        :param elem: a string or :class:`Requirement` instance.
        """
        if isinstance(elem, text_type):
            for requirement in self:
                if requirement.package == elem:
                    return super(Requirements, self).remove(requirement)
        return super(Requirements, self).remove(elem)
def test_question_reviewers_not_needed_if_no_reviewers_no_sugestions(
            self):
        stats = suggestion_services.get_community_contribution_stats()
        self._assert_community_contribution_stats_is_in_default_state()

        self.assertFalse(stats.are_question_reviewers_needed())