First of all, why do you want to remove it? Do you want to take it off even if you don't move the bumper up? It aint structural man. 1 bolt on each fender, and one in the middle bolted to the core support(i think). Once I get some time from all the other crap I have to do on the rig, I will take it off. Mine is rattling like all hell cuz the only bolt holding it on is the middle one, due to me puttin on the glass fenders.
take it off if you don't like it, but I think the bumper is cool like it is, and will protect your rig better offroad and also on the road. The more you move it up the better your approach angle will be, as long as nuthin else is in the way, so keep that in mind.