config.h: remove unused CONFIG_USB_PORT_POWER_IN_S3
config.h: remove unused CONFIG_USB_PORT_POWER_IN_S3

CONFIG_USB_PORT_POWER_IN_S3 is nowhere to be found in the EC source.

BUG=none
BRANCH=none
TEST=verified there are no references to CONFIG_USB_PORT_POWER_IN_S3

Change-Id: I30c05950dec57f59cd18152c9a71fb01128e87fc
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1787625
Reviewed-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec