Levitation was broken as hell. You just fly up and half the population can't touch you or damage you.
I would think even bots would tire of repeating this same tired old nonsense. Levitation was canned because the devs were too busy making kill cams, [censored] UIs, and game-breaking bugs to work on something that would have added awesome avenues of fighting and dungeon building.
As for half the population not being able to touch you....oh noes! Proper balancing would have been all one needed to ensure that the half that could fight a levitating adversary were able to do so effectively.