Unneeded checkout step?

Hi

Just trying to work out if I'm doing something odd.

If the site has only one configured payment method it would be nice if the "choose your payment method" screen could be skipped - currently it's showing like this for me - which seems to just be a bit confusing for users if nothing else.

http://twitpic.com/42ojm9

Can't for the life of me work out which bit of code I'd have to tweak to make it skip this if there's only one payment method active?