Register false in template tag

Hi,
Thanks for this great plugin.
How can i remove Register link when I’m using Template tag. As your “other notes” states that the registration link is “false” by default but it appears when using template tag <?php login_with_ajax() ?>. How can remove it, ie. where to add “register=’true’|’false'” in php case? currently I’ve commented out “Signup Links” in widget_out.php but it is not good idea when updating the plugin.

https://www.ads-software.com/extend/plugins/login-with-ajax/