I try to un-clutter my UI for that kind of stuff. I would rather have two healing specs to switch between for raiding or dailies than to have damage abilities on my bars. I know that's not the norm, but I need useless shit off my bars so I can function.
I'm in the leveling process, so I'm trying all the abilities I have and have them all on my bars. Once I hit 90, some cutting will take place.
A government big enough to give you everything you want, is strong enough to take everything you have. -MLK