code: def delete_service_definition(self, service_type, identifier):
          
          route_values = {}
          if service_type is not None:
              route_values['serviceType'] = self._serialize.url('service_type', service_type, 'str')
          if identifier is not None:
              route_values['identifier'] = self._serialize.url('identifier', identifier, 'str')
          self._send(http_method='DELETE',
                     location_id='d810a47d-f4f4-4a62-a03f-fa1860585c4c',
                     version='5.0-preview.1',
                     route_values=route_values)
docs: DeleteServiceDefinition.
          [Preview API]
          :param str service_type:
          :param str identifier: