How to remove url id from Joomla! 3.1.1 Stable

How to remove Universal Resource Locator(url) id from Joomla! 3.1.1 Stable?

Joomla Menu system allows you to create custom urls:

Create menu item to the article with an alias you pick.

If you don't want that menu item to be shown on the site:

1. Create new Menu called 'Hidden' (Menus > Menu Manager > Add new Menu)
2. Move the item there (open menu item > Menu Location > Hidden)
3. Don't create a module for this menu (or if it has been created automatically on Joomla 1.5 - 2.5 unpublish it in Module manager)