soc/intel/skylake: Remove unsupported sleepstates in ACPI table

soc/intel/skylake: Remove unsupported sleepstates in ACPI table

Some OS certification test (for example Windows) will fail if there
are unsupported sleep states. Since these states are not really used
today, we can remove them from ACPI table.

BRANCH=eve
BUG=b:72197653
TEST=certification system sleep test pass.

Change-Id: I5f5122cac1bf61f7c580afb18cc66b5ff07286fb
Signed-off-by: Lucas Chen <lucas.chen@quanta.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/1065401
Commit-Queue: David Wu <david_wu@quanta.corp-partner.google.com>
Tested-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: https://review.coreboot.org/28080
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>