I wouldn't be too worried about this. Batman: Arkham Asylum and Arkham City both utilized GFWL, and Rocksteady (the developer) simply released a patch that removed the GFWL software. They play just as great as ever.

EDIT: Just kidding. I did not read your comment close enough, clearly. Here's to hoping that Rockstar is as stand-up as Rocksteady, at least.