[Bug 32126] sleep shortcut belongs to gnome-power-manager

[Daniel Silverstone]

Public bug reported:
https://launchpad.net/malone/bugs/32126

Affects: control-center (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

Description:
The sleep action really belongs to gnome-power-manager and as such we
shouldn't have a shortcut for it in the keyboard shortcuts dialog.