You have the option of hiding pages from the section navigation (side menus). This option is useful to temporarily unpublish content.

1. Hover over your section navigation widget, click on the edit icon, and select Section outline.
2. Choose Section Outline.
   
    
3. Check the box next to any page you want to hide
   
   Here you can see I have hidden the page Contact from the menu.

4. Save and view results.