'Delete a tag.
:param tag: Tag to delete.
:type tag: :class:`.CloudSigmaTag`
:return: ``True`` on success, ``False`` otherwise.
:rtype: ``bool``'

def ex_delete_tag(self, tag):

    action = ('/tags/%s/' % tag.id)
    response = self.connection.request(action=action, method='DELETE')
    return (response.status == httplib.NO_CONTENT)
