arch/x86/acpi/debug.asl: Drop POST code stuff

To pave the way for future refactoring commits, drop POST code elements
from the debug.asl file. Only msi/ms7721 includes debug.asl and it does
not use any of it anyway.

Change-Id: Icd73e5c1f700fd7e735bed1668f02da8f9a3adf3
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63986
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

src/arch/x86/acpi/debug.asl

@@ -1,10 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 /*
-* 0x80: POST_BASE
 * 0x3F8: DEBCOM_BASE
-* X80: POST_REGION
-* P80: PORT80
 *
 * CREG: DEBCOM_REGION
 * CUAR: DEBCOM_UART
@@ -17,12 +14,6 @@
 * DEBUG_INIT	DINI
 */
 
-OperationRegion(X80, SystemIO, 0x80, 1)
-	Field(X80, ByteAcc, NoLock, Preserve)
-{
-	P80, 8
-}
-
 OperationRegion(CREG, SystemIO, 0x3F8, 8)
 	Field(CREG, ByteAcc, NoLock, Preserve)
 {