To properly remove the transfer case and make it a true 2WD, you'll need either the tailshaft housing from a 2WD or the entire transmission, and possibly the rear driveshaft. (I'm speaking in generalities because I'm not completely sure what fits and what can just be swapped.)
You'll also need to remove the front diff, front driveshaft, and both CV axles.
You might also need to deal with any DTCs from a disconnected 4WD that the computer(s) think should be reporting, but no longer is.
If that is how it is, it might be easier to find a 2WD and swap the guy. I'm sure he'd be ecstatic to have a working 4WD, and you'd get what you want to start with. As a matter of fact, I'm about to replace the front diff on my '01 and have the "new" one sitting here. Depending on what you have, I could just pull the diff, front driveshaft, and CV axles and swap ya, but I'll have to know fast since I plan to do the work this weekend.