I am a relatively novice handyman. I am installing new doors in my closet. To do so, I am hanging doors from the top rather than dragging crappy metal doors across the floor using a floor and ceiling guide. As a result, the current guide at the top of the closet's metal frame needs to be removed (see link to picture below). This is a metal piece that is somehow bonded to the metal frame, but it looks like it could come off after I used pliers and a few taps with a screwdriver/hammer combo.
Bottom line: what is the best way to remove this piece? I think the screwdriver/hammer approach will only get me so far -- it seems to be pretty solid.