Support delete a tag from a vertex

[Qubutol]

How to delete a tag from a vertex,now we can delete a vertex by vid, but when I delete a vertex, nebula will delete all related tags at the same time.

Describe the solution you'd like
I want nebula support detele tag from a vertex.
Example:

CREATE TAG player(name string, age int);
INSERT VERTEX player(name, age) VALUES 101:("Tony Parker", 36);
CREATE TAG person(name string, birth string);
INSERT VERTEX person(name,birth) VALUES 101:(“Tony Parker”, “1984-01-01”);

When I delete vertex 101, nebula will delete player and person tag.
I just need to delete player tag instead of delete all tags.
Could nebula implement statement such as [DELETE tag_name FROM vid]?

[CPWstatic]

we had support this one in the version 2.0.