Hide super admin or admin from user list?

Hi Guys,
is it possible to hide the super admin or admin from the user list?

I searched the threads and bing and only found this one piece of info.
http://fullthrottledevelopment.com/how-to-hide-the-adminstrator-on-the-wordpress-users-screen
Is this safe? Potentially harmful?

Still it is at best only for admin.

Thanks for all.