Remove the login box from BP Daily Theme sidebar

I have a question - I thought this would be easy, but am running into problems for some reason.
I am running a site with BP Daily Theme and have installed a plugin called Theme My Login, which has given me a widget for the login box, which I've moved into a footer (where I want it). I now need to remove the login box that is in the sidebar of the Daily Theme.

Can someone tell me which file I need to remove it from? Is it the theme/sidebar.php file? And which lines specifically do I remove?