moli: remove ADC6 (for WIFI thermal sensor) in gpio.inc
moli: remove ADC6 (for WIFI thermal sensor) in gpio.inc

BUG=b:231900728
TEST=make BOARD=moli

Signed-off-by: Elsie Shih <1d483d8675236a46b8b2a6fa309ad3eadba08cdc@wistron.corp-partner.google.com>
Change-Id: I14a4c74d7bf2155ef84ec607de8d3ae54dc82c45
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3631788
Reviewed-by: Boris Mittelberg <46897f4fb5cad4b1d5146ad1fd460d7f4825bbf7@google.com>

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