Hello,
there was a user a short while ago with the same question. Here is the issue (and what it comes down to is that there is nothing you can do about it):
The normal timestamps have nothing to do with this syslog message. You can turn off all timestamping on the device, but the syslog would still give you the 'timestamp' at the end. This is because it is an integral part of the message body itself.
So, this 'timestamp' is not really a timestamp, and unfortunately, there is no way to truncate this specific message body to NOT display just the last characters (the 'timestamp').
