perhaps a q-tip and some rubbing alchohol just may work? if it doesnt well then... at least it didn't harm anything, it dries fast, and is a cleaning agent anyways. People use rubbing alchohol to clean electronics often.
lol, a moist paper towel and some light hand soap is more than enough to remove sticker glue.... i removed all the heavy duty brand stickers off my laptop with nothing more than that, it took five minutes and everything came off easily
tape and goo gone, etc, are all way overkill, and tape actually probably won't work at all.