feat: Remove unused database users in secretstore-setup config

[jinlinGuan]

close #5012

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 28.07%. Comparing base (dcc5cb7) to head (d68fe42).
Report is 1 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5015   +/-   ##
=======================================
  Coverage   28.07%   28.07%           
=======================================
  Files         243      243           
  Lines       17591    17590    -1     
=======================================
  Hits         4938     4938           
+ Misses      11525    11524    -1     
  Partials     1128     1128           

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[cloudxxx8]

LGTM