amd/stoneyridge: Remove unused S3 NVRAM save/restore

Remove the BiosRam read and write functions that were brought over from
the hudson source.  The functionality will be superseded later with new
general-purpose functions.

Change-Id: Ib80c66b838fdbdd388a392b4fedaac36bf0bbb0c
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/22725
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2 files changed