Social Theme - Remove Main Header

I'd like to remove the main header from Social theme.

Just to clarify what I'm asking (because I can confuse people sometimes):

I want to keep the BP bar at the top, but I want to remove the section that has the site name, 'welcome back', links and nav bar, along with all text/links on that section.

I will be craeting my own nav bar and the other links can all be used from the BP bar at the top. I have a background that I want to be seen, and that just goes oevr the top of it.