I'd expect the exact opposite.

If I'm not mistaken, to keep native titles running, they need to continue to haul around x86 versions of the majority of the system's libraries and frameworks, in which case there's little reason to not continue supporting Rosetta 2 as a whole since the delta between the two library/framework sets is minimal.

To keep games in WINE/CrossOver/etc working all they need to keep around is the x86 translation layer and maybe the x86 slice of OpenGL. Everything else x86 related can be deleted.