To remove the System Settings submenu of the Applications menu, edit /etc/xdg/menus/applications.menu, by adding the following before the final </Menu> tag in the file:
...
<Menu>
<Name>System Settings</Name>
<Deleted/>
</Menu>
</Menu> <!-- End Applications --> |
The other submenus of the Applications can be removed in similar fashion. Note that the name of the submenus can be determined from the files located in the /usr/share/desktop-directories/ directory.