remove now useless useCallback on signoutSilent

[pamapa]

Closes/fixes #issue

Checklist

• This PR makes changes to the public API
• I have included links for closing relevant issue numbers

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (540d1c7) 81.45% compared to head (4368f46) 81.14%.
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1063      +/-   ##
==========================================
- Coverage   81.45%   81.14%   -0.31%     
==========================================
  Files           9        9              
  Lines         124      122       -2     
  Branches       20       20              
==========================================
- Hits          101       99       -2     
  Misses         16       16              
  Partials        7        7              

Flag	Coverage Δ
unittests	81.14% <ø> (-0.31%)	⬇️

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