reduce logging for empty ad groups

Jobs/EDMI/ADSync/ADSyncJob.vb

@@ -36,7 +36,7 @@ Public Class ADSyncJob
 
                 If oSyncedUsers Is Nothing Then
                     _Logger.Warn("Group {0} could not be synced!", oGroup)
-                Else
+                ElseIf oSyncedUsers.Count > 0 Then
                     _Logger.Info("Synced {0} users for group {1}", oSyncedUsers.Count, oGroup)
                 End If
             Next