If you remove a connection, you won’t be able to file on their behalf, access their filing and payment histories, or use any shared payment accounts they created.
Select Settings in the navigation pane.
On the Settings page, expand the Connections pane.
Locate your connection.
Click Remove. A confirmation dialog is displayed.
Click Yes to confirm you want to remove the connection.
You can also remove a connection through the Add a New Connection dialog.
If this connection was added as a case contact for an existing case, they'll remain a contact unless you access the Case Details page for each case and remove them as a contact.