Duplicate content on homepage

Hi everyone. I was trying to download a demo content and by accident I think I downloaded shapely-demo.xml file twice. I have a doubled content of the home page now. Unfortunately I don’t have a backup created on the site so I can’t roll it back. I tried to delete and re- install the theme, but it didn’t help. I do not have any custom content on the site and I am ready to wipe it out and start from the ground zero. Any ideas how resolve my problem?

Thank you.