gizmo: Don't include the ramstage in the RW sections

Emerge chromeos-bootimage with coreboot now fails when
ramstage is used, so remove it as it's not needed.

BUG=None
BRANCH=none
TEST=emerge chromeos-bootimage succeds and CrOS boots

Change-Id: I9be96f67c837d66ee3ab00f6e1aebda3481747ca
Reviewed-on: https://chromium-review.googlesource.com/192140
Reviewed-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Marcelo Póvoa <marcelogp@chromium.org>
Tested-by: Marcelo Póvoa <marcelogp@chromium.org>
1 file changed