Remove default post on frontpage

I’d like to remove the default post showing on my frontpage. I use the theme Pure from Yootheme.

At the moment I reduced the post to a small space, but it still makes extra unnecessairy space at the bottom of the front page (below the widget “F?redrag”). It’s ID is “component” and the class “floatbox” (tracked it with Firebug). I’d like to remove this code, but don’t know how/where.

Anybody knows?

Site: https://www.utopias.se

Thanks!

/Nathalie