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.

def delete_deployment_group(self, project, deployment_group_id):
        """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.
        """
        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)