refactor: LEAP-1314: Remove Stale Feature Flag - fflag_feat_front_dev…

[luarmr]

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

Removing a FF that was stale for a few months.

WHEN REVIEW
CHECK THE STALE VALUE FIRST

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.72%. Comparing base (e5c1339) to head (38079d6).
Report is 7 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6732      +/-   ##
===========================================
- Coverage    76.73%   76.72%   -0.01%     
===========================================
  Files          170      170              
  Lines        13885    13910      +25     
===========================================
+ Hits         10655    10673      +18     
- Misses        3230     3237       +7     

Flag	Coverage Δ
pytests	76.72% <ø> (-0.01%)	⬇️

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[yyassi-heartex]

/git merge develop

Workflow run
Successfully merged: create mode 100644 web/libs/core/tsconfig.spec.json