Remove Register link on Login Screen - multisite using antisplog

I have a multisite installation using Pro Sites and Antisplog. I'd like to remove the "Register" link from the Login Page but I can't seem to figure how to do this. Yes I have googled and found many options but they do NOT work while using the antisplog plugin because I think this plugin uses its own wp-login.php file? Anyhow, hoping someone in the community has a solution.