soc/intel/alderlake: Remove unused S0IX variable

Signed-off-by: Sean Rhodes <sean@starlabs.systems>
Change-Id: I85fc5dabf10c6df7f11fd1defe8a39afc9f95325
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72797
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/soc/intel/alderlake/acpi/tcss.asl

@@ -42,12 +42,6 @@
 
 Scope (\_SB)
 {
-#if !CONFIG(SOC_INTEL_ALDERLAKE_S3)
-	Name (S0IX, 0)
-#else
-	Name (S0IX, 1)
-#endif
-
 	/* Device base address */
 	Method (BASE, 1)
 	{