def delete_annotation(request, id):
    if _postgres_enabled(request):
        annotation = fetch_annotation(request, id, _postgres=True)
        request.db.delete(annotation)

    legacy_annotation = fetch_annotation(request, id, _postgres=False)
    legacy_annotation.delete()
``destroy_volume`` raises ``UnknownVolume`` if the supplied
dataset/ETHPy150Open hypothesis/h/h/api/storage.py/delete_annotation--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/testtools/_blockdevice.py/IBlockDeviceAPITestsMixin.test_destroy_destroyed_volume