Update "remove a term from the obsoletion list"

[sabrinatoro]

related to #6547

[sabrinatoro]

@nicolevasilevsky @monicacecilia
Please review. I will add this to the curation call for discussion.

[nicolevasilevsky]

we discussed this on the call - it's fine to merge this @sabrinatoro as long as you are willing to enforce this and communicate it to the community.

[sabrinatoro]

I am VERY uncomfortable with saying that an SOP is in place as long as one person is willing to enforce it.

We either decide that this proposal is the SOP to remove terms from the obsoletion list "because it is the right thing to do for mondo", or we decide that the SOP is to save terms from obsoletion every time someone asks (without any additional discussions).
Maybe we need to consider how much additional work this SOP will add? We need to discuss this again before we merge and communicate with users.
@nicolevasilevsky @monicacecilia @cmungall @matentzn

Note: I don't mind doing the work. I just don't want SOP relying on me (or anyone) not getting hit by a bus or winning the lottery and disappearing in nature (because life is just crazy and full of surprises)

[sabrinatoro]

@nicolevasilevsky @twhetzel @monicacecilia

[sabrinatoro]

The document was updated based on the discussion in the comments and in meetings.
@twhetzel and/or @nicolevasilevsky please review and if approved, merge this PR. Thank you.
Additional discussions about SOP and practicalities will need to be discussed on a call.

[nicolevasilevsky]

this looks fine to me