How to hide the left tool bar of content type for non admin people? I want to hide the left tool bar of content type also revision message box, as shown in attachement, for non admin people.

I have gone through following https://www.drupal.org/node/1276698 but it's only for particular content.

Please suggest me how to hide from all content.
in yourwebsite.com/admin/people/permissions check that the following permission are unchecked under Node (click image to enlarge) 



Edit: I did testing, and it's the Administer Content, make sure you uncheck it! Also administer content types as you don't want them to have that either.