Remove email footer

I would like to remove the footer info:

From a WordPress user: admin
User email: webmaster@xxx
User display name: admin
User ID: 1
Sent from (ip address): xx.xx.xx
(xxxxx)
Date/Time: August 15, 2011 11:52 pm
Coming from (referer):
https://www.xxx.com/wordpress/resources/…/
Using (user agent): Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_7)
AppleWebKit/535.1 (KHTML, like Gecko) Chrome/13.0.782.112 Safari/535.1

appended to all emails sent by the form. I only want the emails to include the form text area input, not the source site, WordPress data, etc.

I think I need to remove some code from the …process.php file, namely info relating to the setting of $msg, but, although I’ve experimented, I was unable to do it. Emails keep coming with it attached.

Can anyone help?

Thanks!