CI: remove unneeded provider from fts3restconfig #8280

[panta-123]

the clientID and client_secret are present in FTS DB: https://github.com/rucio/rucio/blob/master/etc/docker/dev/fts/entrypoint.sh#L26 FTS3 looks into DB directly for those. So remove it from config.

References: https://fts3-docs.web.cern.ch/fts3-docs/docs/install/token_configuration.html#add-tokenprovider-information-to-the-database "The FTS Token daemons read the TokenProvider configuration via the database (t_token_provider table)."

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 7.07%. Comparing base (9526397) to head (17c4d1e). :warning: Report is 1 commits behind head on master.

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #8281   +/-   ##
======================================
  Coverage    7.07%   7.07%           
======================================
  Files         272     272           
  Lines       45752   45752           
======================================
  Hits         3238    3238           
  Misses      42514   42514           

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