How to remove Login button

I need to remove Register and Login buttons.

I have unpublished mod_gk_register module but it removed only Register button.

How to remove Login button ?

Hi,
please try unpublish login module published in 'login' position.

please try unpublish login module published in 'login' position.

It works. But in my template it is "Sign In" module in "Login" position.

Thank you.
Regards,
Marcin