'Deletes the Specified Volume_type extra spec.'

def delete_volume_type_extra_specs(self, volume_type_id, extra_spec_name):

    (resp, body) = self.delete(('types/%s/extra_specs/%s' % (volume_type_id, extra_spec_name)))
    self.expected_success(202, resp.status)
    return rest_client.ResponseBody(resp, body)
