:calls: `DELETE /repos/:owner/:repo/issues/:number/labels/:name <http://developer.github.com/v3/issues/labels>`_
        :param label: :class:`github.Label.Label` or string
        :rtype: None

def remove_from_labels(self, label):
        """
        :calls: `DELETE /repos/:owner/:repo/issues/:number/labels/:name <http://developer.github.com/v3/issues/labels>`_
        :param label: :class:`github.Label.Label` or string
        :rtype: None
        """
        assert isinstance(label, (github.Label.Label, str, unicode)), label
        if isinstance(label, github.Label.Label):
            label = label._identity
        else:
            label = urllib.quote(label)
        headers, data = self._requester.requestJsonAndCheck(
            "DELETE",
            self.issue_url + "/labels/" + label
        )