How I can delete the sidebar of my blog section?

Hi!
I love this theme, is so customizable and easy to use all the options, but I have a doubt. Can you show me or explain me how I can delete the right sidebar of my blog section? I only want the text of the articles, only one column per page, without the right sidebar section. Where I have to go to desactivate it?

example of article: http://www.nolycarbonell.com/we-are-violeta-by-mango/

Thanks! 🙂

Ticket