Skinny dev circle workflow

CircleCi CI runs are getting pretty heavy. During dev iterations we trigger many CI pre-commit jobs which are just an overkill.

This ticket has the purpose to purge from the pre-commit workflow all variations of the test matrix but the vanilla one. That should enable us for a quick and cheap to iterate during dev, this is not a substitute for pre-commit . This ticket's work will serve as the basis for the upcoming changes being discussed atm