[front] Cleanup unused downvote code minds#4194

Ticket(s) / Related Merge Requests

• Issue card: minds#4194 (closed)
• Engine MR: engine!1476 (merged)

Summary of Changes

Remove old unused code around downvotes.

Testing Considerations

Failing E2E are unrelated and the result of heavy sandbox load.

• Test you downvote and remove downvote.
• Check they stick on refresh.
• Test interactions modal works for upvotes still (as we removed some downvote code in there).

Deployment Considerations

Standard deployment.

Regression Scope

Downvotes, interactions modal (minor).

Platform Affected (web, mobile, etc)

Engine.

Developer Testing Completed

Manual, unit.

Screenshots / Screen Recording

simplescreenrecorder-2023-09-21_17.35.43

Does this impact

• Localization
• Dark/light mode
• Guest mode

Definition of Done Checklist

• The Acceptance Criteria has been met
• Code is tested: Testing includes unit/spec, E2E/automated and manual testing
• Merge requests description has been filled out