Feature - Removes disable_new_loader_v3_deployments from the feature set

[Lichtso]

Problem

#5300 could not do so because the feature set did not reside in this repository at the time.
This will be backported to v2.2 inside #5315.

Summary of Changes

Removes disable_new_loader_v3_deployments from the feature set.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.3%. Comparing base (2040e8b) to head (e81596c).

Additional details and impacted files

@@            Coverage Diff            @@
##           master    #5463     +/-   ##
=========================================
- Coverage    83.3%    83.3%   -0.1%     
=========================================
  Files         821      821             
  Lines      372153   372152      -1     
=========================================
- Hits       310344   310343      -1     
  Misses      61809    61809             

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