Remove register link from protected content page

Hello, i was wondering if there was a way to remove the register link on the protected content page. I can see where you can edit the message, then below that the login, lost password form comes up, further below is a register link.

I have further added a contact form below that, but i haven't been able to figure out how to get rid of the register link - which seems to be added automatically by the script and i am unable to find any options to turn it off or alter it.. (please see attachment)

thanks