chore(metrics): remove disabled featured flag

[obostjancic]

part of #72392

[priscilawebdev]

code looks good to me

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.98%. Comparing base (118771a) to head (9ed22d0).

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #73101   +/-   ##
=======================================
  Coverage   77.98%   77.98%           
=======================================
  Files        6621     6621           
  Lines      295494   295517   +23     
  Branches    50892    50895    +3     
=======================================
+ Hits       230430   230451   +21     
- Misses      58790    58792    +2     
  Partials     6274     6274           

Files	Coverage Δ
static/app/utils/metrics/features.tsx	30.00% <100.00%> (-11.67%)	⬇️

... and 17 files with indirect coverage changes