Selectively remove title attributes on Genesis-created (vestigial) menus

functions.php

<?php

// Optionally remove from WP custom menus too
add_filter( 'wp_nav_menu_items', 'child_remove_primary_navigation_titles', 10, 2);

add_filter( 'genesis_nav_items', 'child_remove_primary_navigation_titles', 10, 2 );
/**
 * Remove all title attributes on Genesis-created navigation menus in the primary location.
 *
 * @author Gary Jones
 * @link http://code.garyjones.co.uk/remove-genesis-navigation-titles#being-selective
 *
 * @param string $menu HTML markup of menu list items.
 * @param array  $args Menu arguments associative array.
 *
 * @return string HTML markup.
 */
function child_remove_primary_navigation_titles( $menu, $args ) {

	if ( 'primary' == $args['theme_location']  )
		$menu = preg_replace( '/ title="[^"]*"/', '', $menu );
	return $menu;

}