[Feature flag] Cleanup search_mr_filter_source_branch

Summary

This issue is to cleanup the search_mr_filter_source_branch feature flag, after the feature flag has been enabled by default for an appropriate amount of time in production.

Owners

  • Team: Global Search
  • Most appropriate slack channel to reach out to: #g_global_search
  • Best individual to reach out to: tbulva
  • PM: Changzheng Liu - @changzhengliu

Stakeholders

Expectations

What might happen if this goes wrong?

Cleaning up the feature flag

  • Specify in the issue description if this feature will be removed completely or will be productized as part of the Feature Flag cleanup
  • Create a merge request to remove search_mr_filter_source_branch feature flag. Ask for review and merge it.
    • Remove all references to the feature flag from the codebase.
    • Remove the YAML definitions for the feature from the repository.
    • Create a changelog entry.
  • Ensure that the cleanup MR has been deployed to both production and canary. If the merge request was deployed before the code cutoff, the feature can be officially announced in a release blog post.
    • /chatops run auto_deploy status <merge-commit-of-cleanup-mr>
  • Close the feature issue to indicate the feature will be released in the current milestone.
  • If not already done, clean up the feature flag from all environments by running these chatops command in #production channel: /chatops run feature delete search_mr_filter_source_branch --dev --pre --staging --staging-ref --production
  • Close this rollout issue.