Clean up Emerald Lake 2 mainboard directory

Change-Id: I4a64a56dda22050a31232807096e15565a665377
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/967
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
3 files changed