Hi there, @Kara1019.
Thanks for posting to the Community. Let me show you how to remove these accounts in your Chart of Accounts (COA).
Here's how:
- Hover to the Accounting menu and then select Chart of Accounts.
- Find the account and then click the drop-down▼ button on the Action column.
- Select Make inactive and then Yes to confirm.

I'll add this article as your reference in removing accounts from your COA: Delete an account on your chart of accounts in QuickBooks Online. It includes how to disconnect accounts from online banking.
In case you want to make an account active again, you can follow these steps:
- Go to Settings ⚙ and select Chart of Accounts.
- Select the Gear icon ⚙ above the Action column. Then select Include inactive.
- Find the account you want to use again and select Make active.
Feel free to place a comment below if you have more questions. I'll be around to help. Enjoy your day!