>>2051035>as simple as pulling them through and cutting the housingyes, but cutting the housing is a little tricky. they make a special tool but I use end nippers then poke an awl in to round it open. you can use a cutting tool on a Dremel or grinder.
the hard part isn't cutting them, it's hooking the cable back up to the brakes and derailleurs correctly, which is not obvious if you've never done it but the Park tool link will show you how. I think your gears are in the hub aka an IGH? never done one but again, Park.
when trimming make sure there's just enough slack to turn the bars fully both ways. trim the housing, run the cable through, rebolt it and THEN trim the cable with a couple extra inches.