[libnotificationmanager] Remove superfluous debug

We don't want any potentially sensitive data in stderr.
It also doesn't have any context, it's some notifications but only in
one of the N models.

libnotificationmanager/watchednotificationsmodel.cpp

@@ -93,8 +93,6 @@ void WatchedNotificationsModel::Private::Notify(uint id, const QString &app_name
 {
     const bool wasReplaced = replaces_id > 0;
 
-    qDebug() << summary;
-    qDebug() << body;
     Notification notification(id);
     notification.setSummary(summary);
     notification.setBody(body);