Refs #31007 - drop SmartClassParameters API
States the API deprecated and directs users to using a plugin.
Details of extraction https://github.com/theforeman/foreman_puppet_enc/pull/30
Refs #31007 - drop OverrideValues API
Drops OverrideValues API tangled with Puppet, but leaves common partials,
these can be used by all the plugins.
Details of extraction in https://github.com/theforeman/foreman_puppet_enc/pull/32
Refs #31007 - drop API LookupKeysCommonController
Drops Concern used just for puppet, that was having a missleading naming.
Extracted to plugin in https://github.com/theforeman/foreman_puppet_enc/pull/29.