config.h: remove unused PP1350, PP5000 config uptions
config.h: remove unused PP1350, PP5000 config uptions

there are no references to the following config options in our source,
so removing them:

CONFIG_CHIPSET_HAS_PP1350
CONFIG_CHIPSET_HAS_PP5000

BUG=none
BRANCH=none
TEST=verified there are no references to these config options

Change-Id: I94470bc180b7a94b07caa5b858163a10dc3f6157
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1772528
Reviewed-by: Daisuke Nojiri <fd5f93af191bf7e8f73ea71cc3c0f66b41b1dd49@chromium.org>

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