Fb optic 1542/remove a buch of stale feature flags

[luarmr]

WIP

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.02%. Comparing base (e0e91fd) to head (4c6cd48).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #6931      +/-   ##
===========================================
+ Coverage    76.94%   77.02%   +0.07%     
===========================================
  Files          175      175              
  Lines        14144    14144              
===========================================
+ Hits         10883    10894      +11     
+ Misses        3261     3250      -11     

Flag	Coverage Δ
pytests	77.02% <ø> (+0.07%)	⬆️

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