// Place this section in your functions.php

<?php
function removeParentLinks() {
$pages = wp_list_pages('echo=0&title_li=');
$pages = explode("</li>", $pages);
$count = 0;
foreach($pages as $page) {
if(strstr($page,"<ul>")) {
$page = explode('<ul>', $page);
$page[0] = str_replace('</a>','',$page[0]);
$page[0] = preg_replace('/\<a(.*)\>/','',$page[0]);
if(count($page) == 3) {
$page[1] = str_replace('</a>','',$page[1]);
$page[1] = preg_replace('/\<a(.*)\>/','',$page[1]);                
}
$page = implode('<ul>', $page);
}
$pages[$count] = $page;
$count++;
}
$pages = implode('</li>',$pages);
echo $pages;
}
?>

// Now just replace your wp_list_pages(); function with removeParentLinks(); //and away you go.

http://bavotasan.com/tutorials/how-to-remove-the-links-to-parent-pages-in-the-wordpress-page-list/

If you have your wordpress subpages organized by parent pages... and you dont want the parent pages "clickable" this will fix you right up...

Remove wordpress parent links

wordpress, navigation, links

PHP