Where is "Create a website quickly & easily"?

This is probably a dumb question, but I have looked everywhere for this and can't find it.

I'm looking for the module that says "Create a website quickly & easily" that is located under the Image Show GK4 module and to the right of the mainbody module that states "Everything you need to create a website" in the demo content. I can't find any other module, article, or template option that has this heading so that I can modify or even remove it.

Hi,
it is CustomHTML module called 'Mainbody Sidebar' and published in 'sidebar' position.

Thank you very much Konrad!!!