Remove new additions of "this file is part of" lines

CB:41194 got rid of "this file is part of" lines. However, there are
some changes that landed right around the same time including those
lines. This change uses the following command to drop the lines from
new files:
sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool)

Signed-off-by: Furquan Shaikh <furquan@google.com>
Change-Id: Ic3c1d717416f6b7e946f84748e2b260552c06a1b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41342
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/lib/espi_debug.c

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