How do I hide superfluous items in Firefox right-click menus everywhere

Many menu items in Firefox are not normally used, for example, few people will right-click on a page and choose back, print and so on. Add more extensions. That right button is too bloated to read. So below I describe how to hide pages, bookmarks and other places of the right-click menu items, you can choose to hide them according to their needs.

The following code