Deactivate WordPress 3.1 admin bar

I like WordPress 3.1 with it’s nice admin bar as it’s always there and helps you to get where you want much faster then before. Anyway, sometimes I fill that I don’t want to see it there anymore especially when I am working on a new theme and I want to deactivate the WordPress admin bar. So here is how I did it: inside functions.php I added this code:

add_filter( 'show_admin_bar', '__return_false' );

This was it! My WordPress 3.1 admin bar disappear.