[FEATURE] Delete vectors by ID

[bootleg-dev]

Is your feature request related to a problem? Please describe.
I wish I could use Milvus to find and delete vector by it's corresponding ID. Currently the SDK supports only removing the vectors using the date-time, which is a little bit useless for the following cases; suppose I've inserted a huge dataset of animals and the last image vector of a person was mistakenly added, so in order to remove the last vector I need to remove the whole table.

Describe the solution you'd like
Delete vector by its corresponding ID.

Describe alternatives you've considered
Actually this feature is already implemented in FAISS search engine and the other ones. I think you know that it is possible to remove the ID from the index, using remove_ids() in FAISS. Is this possible to add the same feature for the Milvus?

Additional context
https://github.com/facebookresearch/faiss/wiki/Special-operations-on-indexes

[JinHai-CN]

Yes, we already planned to add this feature in the future.
Please check the roadmap: https://milvus.io/docs/en/roadmap/
Any comments are welcome!

[yhmo]

This requirement should be given high priority since more people mentioned it.
milvus-io/pymilvus#113
#124

From other community channel we also receive question for this function. I think we should consider design/implement it in the near future.
Reopen this issue.

[namnh2204]

I'm still waiting for this feature...

[yhmo]

This feature is in tech design phase. We will implement it with the highest priority.

[yhmo]

Already implemented in master branch, will be released in 0.7.0