Title: #352: logging: Removing duplicate log message
Duplicate log messages were getting logged if trust relationship
breaks for some reason from AD. That causes lot spam in syslog.
This PR removes duplicate log entry and keeps extended log entry.
To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/352/head:pr352
git checkout pr352