[SSSD] [sssd PR#800][opened] data_provider_be: got rid of went_offline usage

[alexey-tikhonov]

   URL: https://github.com/SSSD/sssd/pull/800
Author: alexey-tikhonov
 Title: #800: data_provider_be: got rid of went_offline usage
Action: opened

PR body:
"""
Got rid of unused anymore `went_offline` variable

Resolves: https://pagure.io/SSSD/sssd/issue/3991
"""

To pull the PR as Git branch:
git remote add ghsssd https://github.com/SSSD/sssd
git fetch ghsssd pull/800/head:pr800
git checkout pr800