superio/ite/it8673f: Remove poor implementation

Following the reasoning of:
HASH superio/ite/it8705f: Remove poor implementation

Change-Id: Ic0722116b84acf4f3c3ef4b18b961a56f0f50718
Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-on: http://review.coreboot.org/5568
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
7 files changed