You cannot remove or delete an FSB account from online banking, but you may hide that account from displaying.
In the navigation menu, click or tap Settings > Account Preferences. The Account Preferences page with a list of accounts grouped by type appears.
On the Account Preferences page, do the following:
Click or tap the account you want to hide.
Under details click or tap on Visibility
A pop-up screen will ask to confirm this action, click Yes, Hide.
To delete a linked account from another financial institution, follow the directions above, but under visibility, click Remove.