To delete a service profile, log in to your account and go to the 'My Services' section (in the App, you'll find it in 'Settings').
Access the service profile you want to delete and click on the trash icon at the top right of the screen. Once removed, you will no longer receive Opportunities for that service.
If you mistakenly removed a service profile, you can add it again from the same section by clicking on + Add Service.