mb/google/zork: remove MST i2c from dalboz

Dalboz variants do not use an MST hub; remove the i2c tunnel for it.
That bus is actually connected to the battery on these devices, which
should not be exposed to the AP.

BUG=b:175658311
TEST=builds
BRANCH=zork

Change-Id: If1714a5c441bf185efd2517c7c94e57b5f351f5a
Signed-off-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49628
Reviewed-by: Kangheui Won <khwon@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/zork/variants/baseboard/devicetree_dalboz.cb

@@ -338,12 +338,6 @@ chip soc/amd/picasso
 							end
 						end
 					end
-					chip ec/google/chromeec/i2c_tunnel
-						register "name" = ""MSTH""
-						register "uid" = "1"
-						register "remote_bus" = "9"
-						device generic 1.0 on end
-					end
 					chip ec/google/chromeec/audio_codec
 						register "uid" = "1"
 						device generic 0 on end