DEP: Removed deprecated error clearing

[radarhere]

Removed the deprecated functionality from gh-19001

[mattip]

I think we usually wait at least two years before removing deprecated behaviour. Is there a reason to rush the schedule for this?

[seberg]

I think it s currently at least one year/two releases (on a 6month schedule)? So we could probably do it now, as it would hit only by 1.23 and was introduced in 1.21. And I doubt there are important reasons for taking this one slow.

[seberg]

Thanks @radarhere, lets give this a shot, if anyone disagrees please comment and we can revert.

[InessaPawson]

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