[Feature flag] Cleanup `code_suggestions_include_context_imports`
<!-- Title suggestion: [Feature flag] Cleanup <feature-flag-name> --> ## Summary This issue is to cleanup the `code_suggestions_include_context_imports` feature flag, after the feature flag has been enabled by default for an appropriate amount of time in production. The feature has been productized and not removed. <!-- Short description of what the feature is about and link to relevant other issues. Ensure to note if the feature will be removed completely or will be productized--> ## Owners - Team: ~"group::code creation" - Most appropriate slack channel to reach out to: `#g_code_creation` - Best individual to reach out to: @partiaga - PM: @jordanjanes ## Stakeholders - `@dashaadu` - PM for ~"group::editor extensions" - `@michaelangeloio` - Engineer for ~"group::editor extensions" ## Expectations See: https://gitlab.com/gitlab-org/gitlab/-/issues/514124 ### What might happen if this goes wrong? See: https://gitlab.com/gitlab-org/gitlab/-/issues/514124 ### Cleaning up the feature flag <!-- The checklist here is to help stakeholders keep track of the feature flag status --> - [x] Specify in the issue description if this feature will be removed completely or will be productized as part of the Feature Flag cleanup - [ x Create a merge request to remove `<feature-flag-name>` 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. - [x] 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. - [x] `/chatops run auto_deploy status <merge-commit-of-cleanup-mr>` - [ ] 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: `/chatops run feature delete <feature-flag-name> --dev --pre --staging --staging-ref --production` - [x] Close this rollout issue. <!-- Uncomment the appropriate type label /label ~"type::maintenance" /label ~"type::bug" -->
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