The best way to hide the WPMU Dashboard on client sites...

I'm a fairly new WPMU member and I just downloaded Integrated Video Tutorials for a client's site. How do I hide the WPMU Dashboard without using the code:

define(‘WPMUDEV_HIDE_BRANDING’, true);

The problem with using the code is that every time there's a WP update, I'll have to put the code back. If I have this installed for a ton of clients, this is not ideal in anyway.

Any thoughts?