refactor: OPTIC-914: Remove Stale Feature Flag - fflag_fix_front_lsdv_4673_rect3point_relative_310523_short

[luarmr]

Careful in this pr are 2 Feature Flag removal, the 2 of them where part of an if that it is worth it to remove all together

PR fulfills these requirements

• Commit message(s) and PR title follows the format [fix|feat|ci|chore|doc]: TICKET-ID: Short description of change made ex. fix: DEV-XXXX: Removed inconsistent code usage causing intermittent errors
• Tests for the changes have been added/updated (for bug fixes/features)
• Docs have been added/updated (for bug fixes/features)
• Best efforts were made to ensure docs/code are concise and coherent (checked for spelling/grammatical errors, commented out code, debug logs etc.)
• Self-reviewed and ran all changes on a local instance (for bug fixes/features)

Change has impacts in these area(s)

(check all that apply)

• Product design
• Backend (Database)
• Backend (API)
• Frontend

Describe the reason for change

Remove two stale feature flags that have been in that state since June.

fflag_fix_front_lsdv_4673_rect3point_relative_310523_short
ff_front_dev_2132_rotating_bounding_box

both with value True

What does this fix?

Clean Code

What is the new behavior?

No change

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.77%. Comparing base (91ef076) to head (dfe5b83).
Report is 8 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #6162   +/-   ##
========================================
  Coverage    76.77%   76.77%           
========================================
  Files          168      168           
  Lines        13650    13650           
========================================
  Hits         10480    10480           
  Misses        3170     3170           

Flag	Coverage Δ
pytests	76.77% <ø> (ø)

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