DeleteRefFavorite.
        [Preview API] Deletes the refs favorite specified
        :param str project: Project ID or project name
        :param int favorite_id: The Id of the ref favorite to delete.

def delete_ref_favorite(self, project, favorite_id):
        """DeleteRefFavorite.
        [Preview API] Deletes the refs favorite specified
        :param str project: Project ID or project name
        :param int favorite_id: The Id of the ref favorite to delete.
        """
        route_values = {}
        if project is not None:
            route_values['project'] = self._serialize.url('project', project, 'str')
        if favorite_id is not None:
            route_values['favoriteId'] = self._serialize.url('favorite_id', favorite_id, 'int')
        self._send(http_method='DELETE',
                   location_id='876f70af-5792-485a-a1c7-d0a7b2f42bbb',
                   version='5.1-preview.1',
                   route_values=route_values)