update method remove_sns_dingtalk_at_person() in simulator/test_stub.py
update method remove_sns_dingtalk_at_person() in simulator/test_stub.py

zstackio/zstack-woodpecker,zstackorg/zstack-woodpecker,zstackio/zstack-woodpecker,zstackio/zstack-woodpecker,zstackorg/zstack-woodpecker,zstackorg/zstack-woodpecker