Remove Login/Sign Up on Unity

Is there a setting to remove these two things or do I need to just remove it out of the php file? I Dont see a setting but I was just wondering

Also, where it says

Activities are currently restricted to members only.



Log in to see what's going on.

On the Unity Page, what php file is that located in? I want to create a Register Button there since I'm going to remove the ones that show above.

Thanks