How do you remove the 'logo' below the topbar

imageHi,
I have my own site Logo, so have no need for the site name to be dispalyed under the topbar.
I have removed the call for this in the CSS by changing pageshell.php

However, there is now a large gap between the topbar and my site logo, where the normal site name goes.
How do I get rid of this area, please?