soc/amd/picasso/acpi: Remove invalid and unnecessary devices

These devices are not referenced by anything else.

BUG=b:153001807, b:154756391
TEST=None

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I6ea3c326247dce095b5ac1706dbc37f8b215a21e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43425
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>

src/soc/amd/picasso/acpi/northbridge.asl

@@ -49,7 +49,3 @@ Method(_PRT,0, NotSerialized)
 {
 	Return(PR0)
 }
-
-Device(AMRT) {
-	Name(_ADR, 0x00000000)
-} /* end AMRT */

src/soc/amd/picasso/acpi/sb_pci0_fch.asl

@@ -20,15 +20,6 @@ Method(_OSC,4)
 	}
 }
 
-/* Describe the Southbridge devices */
-
-/* 0:14.0 - SMBUS */
-Device(SBUS) {
-	Name(_ADR, 0x00140000)
-} /* end SBUS */
-
-/* 0:14.2 - I2S Audio */
-
 /* 0:14.3 - LPC */
 #include <soc/amd/common/acpi/lpc.asl>