webos-image: Remove storaged from image

storaged requires that the target machine be able to act as a USB
device, which is not true for any of the qemu targets supported by
the base webos-image.

Open-webOS-DCO-1.0-Signed-off-by: Keith Derrick <keith.derrick@palm.com>

Change-Id: I411531d81e898625beed8ae082a2b32649c9bfb3
Reviewed-on: http://g2g.palm.com/1300
Reviewed-by: Keith Derrick <keith.derrick@palm.com>
Tested-by: Keith Derrick <keith.derrick@palm.com>
Reviewed-by: Build Verification