[Feature flag - Cleanup] Remove `webauthn_without_totp` feature flag
`webauthn_without_totp` was rollout to all users of GitLab on the 9ht March 2023 (15.10). No complaints have been reported, so we assume we can remove the `webauthn_without_totp` feature flag. ## Owners - Team: ~"group::authentication" - Most appropriate slack channel to reach out to: `#g_manage_auth` - Best individual to reach out to: @tachyons-gitlab @eduardosanz - PM: @hsutor ## Stakeholders <!-- Are there any other stages or teams involved that need to be kept in the loop? - Name of a PM - The Support Team - The Delivery Team --> ## Expectations ### What might happen if this goes wrong? <!-- Any MRs that need to be rolled back? Communication that needs to happen? What are some things you can think of that could go wrong - data loss or broken pages? --> ### Cleaning up the feature flag <!-- The checklist here is to help stakeholders keep track of the feature flag status --> - [x] Create a merge request to remove `webauthn_without_totp` feature flag. Ask for review and merge it. - [x] Remove all references to the feature flag from the codebase. - [x] Remove the YAML definitions for the feature from the repository. - [ ] Create [a changelog entry](https://docs.gitlab.com/ee/development/feature_flags/#changelog). - [x] Ensure that the cleanup MR has been deployed to both production and canary. If the merge request was deployed before [the code cutoff](https://about.gitlab.com/handbook/engineering/releases/#self-managed-releases-1), the feature can be officially announced in a release blog post. - [ ] `/chatops run auto_deploy status <merge-commit-of-cleanup-mr>` - [x] Close [the feature issue](ISSUE LINK) to indicate the feature will be released in the current milestone. - [x] If not already done, clean up the feature flag from all environments by running these chatops command in `#production` channel: - [x] `/chatops run feature delete webauthn_without_totp --dev` - [x] `/chatops run feature delete webauthn_without_totp --staging` - [ ] `/chatops run feature delete webauthn_without_totp` - [x] Close this rollout issue.
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