navigation - how to remove category nav from Bueno (Wordpress Theme) header in WordPress

Looking at the header, it seems you can either create your own WordPress menu for the secondary-menu , or a "woo_custom_navigation" menu. If any of these are set (and maybe they can even be empty), the category list willt be displayed.

You could also create a child theme, with only the header.php file. This would be a copy of the header.php file of the Bueno theme with the relevant lines removed.

<?php
if ( function_exists('has_nav_menu') && has_nav_menu('secondary-menu') ) { wp_nav_menu( array( 'sort_column' =>
 'menu_order', 'container' =>
 'ul', 'menu_id' =>
 'catnav', 'menu_class' =>
 'nav fl', heme_location' =>
 'secondary-menu' ) );
} else {
?>
<ul id="catnav" class="nav fl">
 <?php if ( get_option('woo_custom_nav_menu') == rue' ) { if ( function_exists('woo_custom_navigation_output') ) woo_custom_navigation_output('name=Woo Menu 2'); } else { ?>
 <?php wp_list_categories('sort_column=menu_order&depth=3&title_li=&exclude='.get_option('woo_nav_exclude')); ?>
 <?php } ?>
</ul>
<!-- /#nav -->
<?php } ?>