This is the "complex layout" home page. You may over-type text and delete what you don't want. Double click on the pictures to change them or upload new ones. In the headings, only the logo image and company name or slogan may be changed.
If you want a simple layout for your home page, create a new page, selecting "Home Page Simple" from the list of pages in the gallery. Set the new page as default and delete the old one.