Remove WooThemes Helper plugin nag

gistfile1.php

<?php

add_action( 'init', 'growdev_remove_woo_nag' );
/**
 *  Remove the admin notice nagging you to install/activate the WooThemes Helper plugin
 *  This notice should be dismissable, but isn't.
 * 
 */
function growdev_remove_woo_nag() {
	remove_action( 'admin_notices', 'woothemes_updater_notice' );
}