What the title says, and it was also done like that in later xpacs.
Running in the air like it's done now just looks janky and doesn't make sense. Idle animation for levitate already has nice levitating pose, just always keep that pose while levitating+moving instead of doing walk/run animations.
(a little cloud thingy below feet would be dope, but that is probably more work to do. Just turning off existing animations shouldn't be that hard though, right?)