mb/google/hades: Remove gspi from baseboard device tree

GSPI is not used, remove it.

BUG=b:271199379
TEST=abuild -a -x -c max -p none -t google/brya -b hades

Signed-off-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Change-Id: I55d3f5119bc502621bdeae63b3d1e4cf43582038
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73839
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Ivy Jian <ivy.jian@quanta.corp-partner.google.com>

src/mainboard/google/brya/variants/baseboard/hades/devicetree.cb

@@ -113,7 +113,6 @@ chip soc/intel/alderlake
 		device ref heci1 on end
 		device ref sata on end
 		device ref uart0 on end
-		device ref gspi1 on end
 		device ref pch_espi on
 			chip ec/google/chromeec
 				device pnp 0c09.0 on end