You can just buy a shorter serpentine belt that goes right under the a/c pulley to bypass it, then lop off that part of the bracket that mount the ac pump all together. If you have an air pump too, ??, you'll have to figure a similar plan.
That's exactly what I did in the pic. There's a missing idler pulley above the water pump that the belt will go under before going to the PS pump. It will use a factory belt as well going this route.