Deactivated contact still shows as a contact person for an Account

Hi I understand from other threads that for OOB configuration, when you deactivate an account, it will not deactivate the contacts.

My question would be, if you deactivate a contact because the staff for that account has left, would the OOB configuration remove that contact association from existing account?

How can we remove the contact from that account automatically if the staff has left the company? Thank you.