Hi there, you are currently using the Matala theme, which has three widget areas. I see that you have widgets in all of those areas. You don't want any widgets to appear in your sidebar, you can drag and drop them (under Appearance > Widgets) from the Default Sidebar Area into the First (or Second) Supplementary Widget Area.
If you are still experiencing difficulties with this, it would be great if you could upload a screenshot to your media library of what you are seeing, so that I can better understand the issue. This page has some helpful tips for taking screenshots:
http://en.support.wordpress.com/make-a-screenshot/