[Mediawiki-l] delete the logo so that the navigation bar is going up

[uv22e Alcott]

hi,
I know how to handle the logo and change it but i would like to delete it so
It s easy to overrite it with a transparent png or just to uncomment it in
the local settings or just $wgLogo = "";

But what do I need to do that there is not that space on top left? I would
like to move the navigation to the top left without leaving the space the
logo was thought for

:)
Thanks a lot!