This is not a problem: the RPM package xorg-x11-drv-ati is a standard X11/X.Org driver package supplied with Fedora, and will be updated accordingly. There are numerous video driver packages xorg-x11-drv-* installed by default. Simply ignore such updates.
Although it's theoretically perfectly possible to remove all unnecessary drivers, video and otherwise, the effort is not worth the small HDD space savings, IMO.
This is completely off-topic, but Omni-Tom, I really like your signature! It reminds me of my dear **cough** neurotic **cough** grandmother's life. Unfortunately, I've inherited some of her **cough** "concerns".