How can I delete a credit card from the list of accepted cards?

When I set up my company file years ago, it automatically set up 4 credit cards as "accepted" cards.  I record my credit card payments differently, so I've never used this function.  Is there a way to remove them from the list?  I've followed the very specific instructions to clear each of the fields (name, asset account, discount fee and expense account), but it won't allow me to move to another line or save because "The name was not entered.  The credit card must have a name."  Is this a glitch, or is there a way around it.  I don't have other modules open, and I can change the name (so it's editable).