[Feature flag] Clean up analytics_visualization_designer_filtering

Summary

This issue is to cleanup the analytics_visualization_designer_filtering feature flag, after the feature flag has been enabled by default for an appropriate amount of time in production. We can totally remove the feature flag and the deprecated query-builder code.

Feature flag issue: [Feature flag] Enable analytics_visualization_d... (#462729 - closed).

Owners

• Team: groupproduct analytics
• Most appropriate slack channel to reach out to: #g_monitor_product_analytics
• Best individual to reach out to: @jiaan
• PM: @lfarina8

Stakeholders

Expectations

What might happen if this goes wrong?

Unlikely to happen and low usage on the current visualization designer means there's a low cause for concern.

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 <feature-flag-name> 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 7d1d12b15caab5bd91b10b1f28df3357401a7fa6
• 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 <feature-flag-name> --dev --pre --staging --staging-ref --production
• Close this rollout issue.