Terri Chu authored Jun 25, 2024 and Madelein van Niekerk committed Jul 02, 2024

This migration marks the 20230615101400 CreateEpicIndex Advanced search migration as obsolete.

This MR will still need changes to remove [references to the migration](https://gitlab.com/search?project_id=278964&scope=blobs&search=create_epic_index&regex=false)
in the code. At the moment, the `gitlab-housekeeper` is not always capable of removing all references so
you must check the diff and pipeline failures to confirm if there are any issues.
It is the responsibility of the assignee (picked from ~"group::global search") to push those changes to this branch.

You can read more about the process for marking Advanced search migrations as obsolete in
https://docs.gitlab.com/ee/development/search/advanced_search_migration_styleguide.html#deleting-advanced-search-migrations-in-a-major-version-upgrade.

As part of our process we want to ensure all Advanced search migrations have had at least one
[required stop](https://docs.gitlab.com/ee/development/database/required_stops.html)...