Nope on removing factory tint, it is made into the glass. Your best chance would be to replace the glass with non-tinted version, that might be difficult to accomplish without a lot of expense. You're looking at either buying all new, or finding replacement from a donor vehicle.
I doubt that any 2002 FX4s came without factory tint, most likely that was part of the option package.
The good news is that all windows other than windshield are bolt in, not glue in, so fairly easy to replace at home. More good news is that the rear windows on all extended cabs, and at least 98+ regular cabs, are interchangable. Same for the front door glass, 93+ Rangers. Pretty certain that the rear doorglass can only come from another Ranger with the rear doors, so only 98+.
If I were to guess, I would say that almost anything other than the most base model Ranger probably came with tinted windows from the factory. Problem is that I'm not sure you'll find a base model with rear doors.
That's pretty much all the help I can provide with windows.