Remove Wordpress Theme Widget Support

I am creating a theme for a customer using the latest version of Wordpress. The theme/design for their website doesn't not display widgets or a sidebar. How can I remove the "Widgets" link from the sidebar in the admin panel? Also, under the "Manage Themes" page The options for my theme say "Widgets | Menus". I would also like to remove the "Widgets" link if possible.

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This can be done by altering the global $menu array described in this article.

http://www.wprecipes.com/how-to-remove-menus-in-wordpress-dashboard

Unregister the theme options shuld be possible by overridable in the childthemes functions.php file.