gumboz: update AC power on limit
gumboz: update AC power on limit

This patch update AC only power on limit from 50W to 40W,
and remove unused config.

BUG=b:199254041
BRANCH=zork
TEST=make sure AC only can auto power on with 45W adapter.

Signed-off-by: Zick Wei <3d0b14a1e83601e71d11cd2c38ee93ff1dbbc737@quanta.corp-partner.google.com>
Change-Id: I55b6f2a91b68fd1f2bd287228719f8b9a35ba532
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3147971
Reviewed-by: Denis Brockus <6b21e8190fb5e373363fb95271367073a16474ef@chromium.org>
Reviewed-by: Peter Marheine <ef0b2c492edde94778d7465bfbaeed52c5be6858@chromium.org>
Tested-by: Denis Brockus <6b21e8190fb5e373363fb95271367073a16474ef@chromium.org>
Commit-Queue: Denis Brockus <6b21e8190fb5e373363fb95271367073a16474ef@chromium.org>

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