Enhancement: Deprecate active_group creation

[astrochun]

Summary

Previously we had a Grouper stem called active_group to add users manually to the active group with the user_update script. This was to handle large groups and to avoid a lot of manual adds to the active group, which should only consists of indirect membership. With ReQUIAM deployment complete for some time, this feature is really not needed as we learned recently for one user who left the university.

Objectives

This will reduce the codebase and avoid confusion when the user_update is executed on a user that is not in active status (i.e., just clean-up status)

Proposal

Simply removing the lines in question and conducting some dry run test on local dev should suffice.

Testing notes

See above.

Additional notes

For now, I do not think we should remove the --active_remove option. Namely, we should still have this supported (some changes to conditionals are needed). There are still a number of users that have direct membership. We can use this to remove those users through the Grouper API.

Implemented in: TBD