Follow up to #6058: Remove unnecessary log message for JWT

[vpratz]

I unintentionally included this log message I used for debugging in #6058. This PR now removes it.
Sorry for the extra work.

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[cwperks]

Thank you for the follow-up on this @vpratz!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.52%. Comparing base (ca2aaf1) to head (d4c09c9).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6086      +/-   ##
==========================================
+ Coverage   74.47%   74.52%   +0.05%     
==========================================
  Files         446      446              
  Lines       28423    28440      +17     
  Branches     4331     4333       +2     
==========================================
+ Hits        21168    21196      +28     
+ Misses       5245     5239       -6     
+ Partials     2010     2005       -5     

Files with missing lines	Coverage Δ
...ty/auth/http/jwt/AbstractHTTPJwtAuthenticator.java	67.76% <ø> (+2.38%)	⬆️

... and 10 files with indirect coverage changes

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