code: def delete_deployment_group(self, project, deployment_group_id):
          
          route_values = {}
          if project is not None:
              route_values['project'] = self._serialize.url('project', project, 'str')
          if deployment_group_id is not None:
              route_values['deploymentGroupId'] = self._serialize.url('deployment_group_id', deployment_group_id, 'int')
          self._send(http_method='DELETE',
                     location_id='083c4d89-ab35-45af-aa11-7cf66895c53e',
                     version='5.0-preview.1',
                     route_values=route_values)
docs: DeleteDeploymentGroup.
          [Preview API] Delete a deployment group.
          :param str project: Project ID or project name
          :param int deployment_group_id: ID of the deployment group to be deleted.