chore(feature): Clean up released features that use OptionBackedRolloutFeatureHandler in getsentry

[wedamija]

I want to consolidate code between OptionBackedRolloutFeatureHandler and AutoRegisterOptionBackedRolloutFeatureHandler. These features handlers all use OptionBackedRolloutFeatureHandler, but have been released for months (https://redash.getsentry.net/queries/6524/source). Just removing the flags.

[JoshFerge]

nice

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.70%. Comparing base (fe86a58) to head (ea92f0c).
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #69168   +/-   ##
=======================================
  Coverage   79.70%   79.70%           
=======================================
  Files        6421     6421           
  Lines      285319   285306   -13     
  Branches    49161    49161           
=======================================
- Hits       227416   227406   -10     
+ Misses      57467    57464    -3     
  Partials      436      436           

Files	Coverage Δ
src/sentry/conf/server.py	89.22% <ø> (ø)
src/sentry/features/temporary.py	100.00% <ø> (ø)
...rmance_issues/detectors/consecutive_db_detector.py	96.89% <100.00%> (-0.03%)	⬇️
...ormance_issues/detectors/http_overhead_detector.py	96.84% <100.00%> (-0.04%)	⬇️
...e_issues/detectors/mn_plus_one_db_span_detector.py	97.16% <100.00%> (-0.02%)	⬇️
..._issues/detectors/n_plus_one_api_calls_detector.py	93.37% <100.00%> (-0.05%)	⬇️
...s/detectors/render_blocking_asset_span_detector.py	96.10% <100.00%> (-0.05%)	⬇️
...ormance_issues/detectors/slow_db_query_detector.py	98.24% <100.00%> (-0.04%)	⬇️
...ce_issues/detectors/uncompressed_asset_detector.py	94.20% <100.00%> (-0.09%)	⬇️

... and 4 files with indirect coverage changes