Suppress "register" in login module

Hello,
I have my mobile site working pretty well at this point (pse.org), but there's one issue relative to the login module. I need to hide or remove the "register" link without disabling new user registration in the Joomla global system/user settings. User registration/subscription is being handled through a dedicated e-commerce component. I do not want to leave open any side doors or back doors via the mobile site. So I want to make it impossible for anyone to register there. The solution I propose is to delete the registration event in the mj-login module Php. Will that work? Here's the snippet I am thinking of:

<li> <a href="/<?php echo JRoute::_( 'index.php?option=com_user&task=register' ); ?>"> <?php echo JText::_('REGISTER'); ?></a> </li> 

Am I on the right track? 

It also occurred to me that I could change the hyperlink to redirect registration to an article explaining that to become a site member you must use the main site.

Can I just create that article and drop in that internal link instead of "index.php?option=com_user&task=register"?

Any help would be appreciated, as I am a Mobile Joomla first-timer.

-JG

Just disable "Allow User Registration" in Joomla's Global Configuration (if your e-commerce extension allows to register bypass com_users).