x86: coreboot: Remove the dummy pch driver

There is a dummy pch driver in the coreboot directory. This causes
drivers of its children fail to function due to empty ops. Remove
the whole file since it is no longer needed.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/coreboot/Makefile

@@ -18,4 +18,3 @@ obj-y += coreboot.o
 obj-y += tables.o
 obj-y += sdram.o
 obj-y += timestamp.o
-obj-$(CONFIG_PCI) += pci.o

arch/x86/cpu/coreboot/pci.c

-/*
- * Copyright (c) 2011 The Chromium OS Authors.
- * (C) Copyright 2008,2009
- * Graeme Russ, <graeme.russ@gmail.com>
- *
- * (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <dm.h>
-#include <pci.h>
-
-static const struct udevice_id generic_pch_ids[] = {
-	{ .compatible = "intel,pch7" },
-	{ .compatible = "intel,pch9" },
-	{ }
-};
-
-U_BOOT_DRIVER(generic_pch_drv) = {
-	.name		= "pch",
-	.id		= UCLASS_PCH,
-	.of_match	= generic_pch_ids,
-};