Remove debug CADF payload for every authN request

Since we already provide a generic mechanism for logging notifications
(setting the notification_driver value to 'log'), having an additional
debug log just for this case seems unnecessary.

Closes-Bug: #1352115
Change-Id: I3bdf726ee2b32c434497b8c9372e2ab4cc8853cf
Merge "Remove debug CADF payload for every authN request"