[Fixes #11995] Implement the DELETE method for the User API

[RegisSinjari]

Checklist

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[codecov]

Codecov Report

Merging #12028 (dad23ee) into ISSUE_11995 (a411232) will increase coverage by 0.07%.
The diff coverage is 100.00%.

Additional details and impacted files

@@               Coverage Diff               @@
##           ISSUE_11995   #12028      +/-   ##
===============================================
+ Coverage        63.80%   63.88%   +0.07%     
===============================================
  Files              867      867              
  Lines            52843    52934      +91     
  Branches          6609     6614       +5     
===============================================
+ Hits             33719    33815      +96     
+ Misses           17598    17594       -4     
+ Partials          1526     1525       -1