Ok, heres how to remove the link at the bottom.
Go into Plugin Manager and look for Disable Tabs which is found under "Product: vBH - Add new tabs 1.2", select Edit, in the "Plugin PHP Code" box, scroll down and remove the following lines of code.
Code:
//copyright start here
if(!defined('VBH_CPR')) {
$key = strpos($vbphrase['powered_by_vbulletin'], "vbhispano.com");
if($key === false){
$vbhcpr = '<br />Extra Tabs by <a href="http://www.vbhispano.com" title="Soporte vBulletin en Espa?ol">vBulletin Hispano</a>';
define('VBH_CPR', $vbhcpr);
$vbphrase['powered_by_vbulletin'] .= VBH_CPR;
}
}