Duplicate information controller and action information in rails logs

Caller id vs. controller_and_action

Since gitlab-org/gitlab!31209 (merged) we have the meta.caller_id field in requests, for rails controllers this contains the Controller#action information, we also have other fields with the same data:

• controller_and_action: This is a scripted field that we can probably remove with a click
• controller
• action

Should we remove these fields in favor of meta.caller_id that's available in the sidekiq logs as well?