[Feature flag] Cleanup compressed_package_metadata_query

Summary

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

See the following for more details:

• [Feature flag] Rollout of `compressed_package_m... (#409793 - closed)
• Update package metadata license lookup to use d... (#408906 - closed)

Owners

• Team: Composition Analysis
• Most appropriate slack channel to reach out to: #g_secure-composition-analysis
• Best individual to reach out to: @adamcohen
• PM: @smeadzinger

Stakeholders

Expectations

What might happen if this goes wrong?

Cleaning up the feature flag

• Create a merge request to remove <feature-flag-name> feature flag. Ask for review and merge it.

  • Remove compressed_package_metadata_query flag (!130976 - merged)
    • Remove all references to the feature flag from the codebase.
    • Remove the YAML definitions for the feature from the repository.
    • Create a changelog entry.
    • Remove the project parameter from Gitlab::LicenseScanning::PackageLicenses#initialize since the project parameter only exists to determine whether the compressed_package_metadata_query feature flag has been enabled on the project. See this discussion for more details.

• 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.

  • [Feature flag] Rollout of `compressed_package_m... (#409793 - closed)

• If not already done, clean up the feature flag from all environments by running these chatops command in #production channel:

  • /chatops run feature delete <feature-flag-name> --dev
  • /chatops run feature delete <feature-flag-name> --staging
  • /chatops run feature delete <feature-flag-name>

  

• Close this rollout issue.