Remove Join Button from BlogsMU

Hi,

I'd like to use BlogsMU on a multisite install without BuddyPress. I'd like to remove the "Join Our Community Now" button and the "Already a member?" login links from the header.

I've seen similar queries for other themes, but was hoping someone had the files and code I need to remove. I've made a child theme, so I'll be copying the necessary files and editing those.

Thanks in advance!

Sylvia