You can delete a provider in
Settings
→ Details
at the bottom of the page you should see a DELETE link. If you don't see a delete link it means you've associated an application with that provider. In this case, you'll have to delete the application first, before you delete the provider. This is a safety net we've added so that you wont end up with applications without providers when you delete any provider.It's easy to delete a provider... See below: