Extensions like uBlock already use community-updated filter lists like EasyList.
I would be very perplexed if none existed that removed cookie warnings.
Edit: If you open uBlock's options and go to the Filter Lists tab, you can see that https://kb.adguard.com/en/general/adguard-ad-filters#annoyan... and Fanboy's Annoyances List are two that block some privacy popups, but you'd probably need to enable them.
There are actually quite a lot of lists on that page (click the "+" marks to expand the unchecked lists) that are opt-in rather than on by default, so it's worthwhile to give them a whirl and see if any block cookie popups.