Remove “End-user plans” feature (On-Premises)

On-premises
In the release notes for 3scale 2.4 we announced the deprecation of the “End-user plans” feature. The goal is to completely remove this feature from the product in 2.5.

SaaS
For SaaS, we also want to remove this feature but we currently have 92 accounts with this feature enabled. We need to refine the queries to see who is really using it and make affected customers use the “edge limiting” policy instead. We’ll do a follow-up and once all customers have migrated, we’ll be able to remove this feature in SaaS.

Docs
This will not be removed from the docs until the complete removal of the feature from Saas as well. The latter can be tracked in https://issues.jboss.org/browse/THREESCALE-1928.