Whether proven or not you were investigated for fraud. That’s a simple fact and it’s relevant information for any financial institution to consider before hiring you. I doubt there’s anything you can do to remove that from your record. Also was this a one time thing? To be honest, from your post, it kinda sounds like you were short multiple times. Maybe that’s not the case, but, again to be honest, I kinda doubt the bank would place you under a fraud investigation for a one time shortage of a petty sum like $100.