Removing an item from the Site Navigation within webcore cmx is an easy process.
From the Left Navigation Bar, you need to select the page you want to add to the Navigation. Once you have clicked it, you need to select the Site Navigation tab.
After selecting the Site Navigation, the Navigation Manager page will appear.
Double click on the navigation item needed to be removed. The following pop-up window will appear.
A Pop-up window will appear. Click the DELETE button and the Navigation item will be removed from the Site Navigation.