mb/google/rex/var/karis: Remove I2C2 "on" settings

GPP_H04/GPP_H05 doesn't use for I2C usage, remove I2C2 "on" settings.

BUG=b:294155897
TEST=Check ap firmware log, i2c2 is disabled

Change-Id: I0124fd108fbbd87507d252e9caab4dfc16aceddb
Signed-off-by: Tyler Wang <tyler.wang@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78339
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eran Mitrani <mitrani@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/rex/variants/karis/overridetree.cb

@@ -411,7 +411,6 @@ chip soc/intel/meteorlake
 				end
 			end
 		end
-		device ref i2c2 on end
 		device ref i2c3 on
 			chip drivers/i2c/generic
 				register "hid" = ""ELAN0000""