Hi Gary
If they are personal accounts (not business), then you can safely delete them.
If it’s a business account or card, then you may wish to tag them to the Proprietor’s Drawings Account or Director’s Loan Account (sole trader/partnership and limited company respectively). These would then need to be accounted for. For example, if you’re a sole trader and you take money out of the business account, the Proprietor’s Drawings Account would need to be cleared via a journal to reflect accurately on your accounts. With a Director’s Loan Account (DLA), you would need to pay the money back to balance it out.
Hope that helps, but please let us know if you need further help.