How to remove "Show all posts under…" from menu mouseover?

Greetings all,

How do I remove the tool tips from appearing on my menus? For example, the “Show all posts under…” on the categories menu. I understand the issues with accessibly and all that, but they are reaping havoc on my otherwise nice looking drop-down menus.

I found where one person asked over at Elegant Themes, thinking as I did that it had to do with the theme. But the reply was as follows:

Honestly I am not sure how to change this. The links are not hard coded, but are instead generated via the wodpress function wp_list_cats/wp_list_categories. Without editing the function itself I don’t think there is a way to remove title tags.

I’m using WordPress 3.1 and cannot find wp_list_cats or wp_list_categories. I’m assuming he’s referring to an older version of WordPress, and that the functions are now located in some other files.

Please, which files should I be looking for? and what should I remove to get rid of the tool tip thingies?

Thanks ??