Drop SuperIO ite/it8661f

All boards using this SuperIO have been removed from the tree already.

Change-Id: Ifca91ae44ab222371808ff1e0027a7cbd4646b0a
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: http://review.coreboot.org/12243
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
6 files changed