src: Drop "This file is part of the coreboot project" lines

Commit 6b5bc77c9b22c398262ff3f4dae3e14904c57366 (treewide: Remove "this
file is part of" lines) removed most of them, but missed some files.

Change-Id: Ib8e7ab26a74b52f86d91faeba77df3331531763f
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53976
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/include/metadata_hash.h

@@ -1,5 +1,4 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* This file is part of the coreboot project. */
 
 #ifndef _METADATA_HASH_H_
 #define _METADATA_HASH_H_

src/lib/metadata_hash.c

@@ -1,5 +1,4 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* This file is part of the coreboot project. */
 
 #include <assert.h>
 #include <metadata_hash.h>

src/soc/intel/apollolake/include/soc/msr.h

@@ -1,5 +1,4 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* This file is part of the coreboot project. */
 
 #ifndef _SOC_MSR_H_
 #define _SOC_MSR_H_

src/soc/intel/xeon_sp/acpi/gpio.asl

@@ -1,5 +1,4 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
-/* This file is part of the coreboot project. */
 
 #include <soc/gpio.h>
 #include <soc/pcr_ids.h>

src/vendorcode/amd/agesa/Kconfig

@@ -1,5 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
-# This file is part of the coreboot project.
 
 choice
 	prompt "DDR3 memory profile"