devices-tile: Don't wait before removing 'shadowed' tiles
devices-tile: Don't wait before removing 'shadowed' tiles

When a mount is shadowed, it shouldn't be in the UI in the first
place: should not show the "It is safe to unplug..." in this case.

meego-netbook-ux/meego-panel-devices,meego-netbook-ux/meego-panel-devices,meego-netbook-ux/meego-panel-devices