How do I delete my firm on quickbooks accountant online?

Hi there, 

QuickBooks Online Accountant is an awesome tool used by bookkeepers everywhere! This account allows you to connect all of your client's QuickBooks accounts to yours, for easy access and work management. If you no longer need your QuickBooks Online Accountant account, don't worry. Since this account is a free tool, there's no reason to cancel the account. 

I hope this helps clear things up for you. 

Have a nice day.