Drop now unnecessary command to create brokers.d

[adombeck]

The directory /etc/authd/brokers.d/ is created during package installation since 08aaecb.

UDENG-9480

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.39%. Comparing base (6085fe4) to head (d8447bd).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1355      +/-   ##
==========================================
+ Coverage   86.35%   86.39%   +0.04%     
==========================================
  Files          99       99              
  Lines        6690     6690              
  Branches      111      111              
==========================================
+ Hits         5777     5780       +3     
+ Misses        857      854       -3     
  Partials       56       56              

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