How to disable Windows 7 Libraries

1. Type regedit in RUN or startmenu search box and press Enter. It'll open Registry Editor.
2. Now go to following key:

HKEY_CLASSES_ROOT\CLSID\{031E4825-7B94-4dc3-B131-E946B44C8DD5}\ShellFolder

3. Now you'll need to change value of "Attributes" DWORD value present in the right-side section. But Windows will not allow you to change its value as you won't have proper permissions.
To get permissions, first right-click on "ShellFolder" key and select "Permissions".
4. Now double-click on "Attributes" DWORD value given in right-side section and change its value to b090010d
5. That's it. Log off or restart your system and "Libraries" will no longer present in Explorer window.
NOTE: If you want to restore "Libraries" in Navigation pane, simply change value of "Attributes" DWORD to b080010d using step 4.