You could easily find a shorter belt, once it's taken off just use a piece of string to trace the belt, eliminating the A/C, then measure the string and go to an autoparts store and ask for one that long. Problem is, and I haven't looked at the belt diagram, on some cars when you bypass something the belt won't have enough tension to spin another pulley (power steering, alternator, etc.) or you'd have one pulley going the wrong way or something.