'Send a delete back to consumer'

def _send_lti2_delete(self):

    payload = textwrap.dedent('\n                                {\n                                    "@context"    :    "http://purl.imsglobal.org/ctx/lis/v2/Result",\n                                    "@type"    :    "Result"\n                                }\n                                ')
    return self._send_lti2(payload)
