Why do you need to remove any gears? You just unscrew the pedal from the arm and that's it. I'm really not understanding why you think it's necessary to remove

Why do you need to remove any gears? You just unscrew the pedal from the arm and that's it. I'm really not understanding why you think it's necessary to remove more than that. I've done it on quite a number of different bikes, it really is quite easy.