Are these accounts in good standing?
Credit card accounts in good standing continue to appear on your credit report for at least 10 yrs from the date they were closed, sometimes even more.
Closed accounts in good standing have zero balance. If this is the case than why on earth would you want to delete them?
Old accounts in good standing reflect favorably on your credit, they just don’t count that much in your credit score. Accounts in good standing are good news for any potential lender viewing your credit report as part of new credit application.
Leave them be. No sense in removing them.
Good luck