[DOCS] Remove logic for permanently unreleased branches (#79575)
[DOCS] Remove logic for permanently unreleased branches (#79575)

These tags are no longer needed. We previously used them for docs behind a feature flag. You can now achieve the same effect with `"{release-state}"!="released"`.

No docs currently use this logic.
GlenRSmith/elasticsearch,GlenRSmith/elasticsearch,GlenRSmith/elasticsearch,GlenRSmith/elasticsearch,GlenRSmith/elasticsearch