Nivo on "[Plugin: Remove Title Attributes] Remove Title attribute from menu link"

I want to remove title attribute in my menu. On the web, someone was sugessting this code to be inncluded in fonction.php

function my_menu_notitle( $menu ){
  return $menu = preg_replace('/ title=\"(.*?)\"/', '', $menu );

}
add_filter( 'wp_nav_menu', 'my_menu_notitle' );
add_filter( 'wp_page_menu', 'my_menu_notitle' );
add_filter( 'wp_list_categories', 'my_menu_notitle' );

It did work for one site in WP v3.8 but it does not work for another one I have in v3.6.1.

Any sugestions?

Thanks for your time.

http://wordpress.org/plugins/remove-title-attributes/