In order to remove a connection with a Service Pro, go to the Contacts → "Service Pros" page from your left side menu and click "View profile" for the required Service Pro:
Select "Remove Connection" from the three-dot menu in the top right corner of the screen and confirm your choice.
All shared items, transactions, requests, etc. will not be available to your service pro. Also, you won't be able to communicate via Messenger:
You can also delete your Service Pro if necessary. Please select "Delete" from the three-dot menu:
This action will remove all assigned maintenance requests and all related transactions.