[tmp] Revert "[tmp] Added more debug output"

This reverts commit 28e48b2.

openwisp_radius/receivers.py

@@ -102,28 +102,23 @@ def close_previous_radius_accounting_sessions(instance, created, **kwargs):
         return
     RadiusAccounting = load_model('RadiusAccounting')
     closed_sessions = []
-    logger.info(
-        f'username: {instance.username}; calling-station-id: {instance.calling_station_id}'
-    )
     open_sessions = RadiusAccounting.objects.exclude(
         unique_id=instance.unique_id
     ).filter(
         stop_time__isnull=True,
         calling_station_id=instance.calling_station_id,
         username=instance.username,
     )
-    logger.info(f'open_sessions: {open_sessions}')
     for session in open_sessions:
         session.stop_time = session.update_time or now()
         session.terminate_cause = 'Session-Timeout'
         closed_sessions.append(session)
     # avoid bulk update if not necessary
     if not closed_sessions:
         return
-    res = RadiusAccounting.objects.bulk_update(
+    RadiusAccounting.objects.bulk_update(
         closed_sessions, fields=['stop_time', 'terminate_cause']
     )
-    logger.info(f'res: {res}')
 
 
 def radius_user_group_change(sender, instance, **kwargs):