'Helper request handler for DELETE requests to LTI 2.0 result endpoint
DELETE handler for lti_2_0_result.  Assumes all authorization has been checked.
Arguments:
request (xblock.django.request.DjangoWebobRequest):  Request object (unused)
real_user (django.contrib.auth.models.User):  Actual user linked to anon_id in request path suffix
Returns:
webob.response:  response to this request.  status 200 if success'

def _lti_2_0_result_del_handler(self, request, real_user):

    self.clear_user_module_score(real_user)
    return Response(status=200)
