offloading the work to deprovision a user to the api

per: https://jira-projects.socialcast.com/browse/APA-51

Most of the de-provision percent handling is going to be offloading to a server setting. This code is no longer needed in the gem and should not be documented!

This can not be merged until https://github.com/socialcast/socialcast/pull/5422 is live
see https://github.com/socialcast/socialcast/pull/5422#issuecomment-39973959