Fix files with multiple newlines at the end.

Change-Id: Iaab26033e947cb9cf299faf1ce6d40a90a9facbe
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20704
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

src/lib/gnat/COPYING.RUNTIME

@@ -70,4 +70,3 @@ consistent with the licensing of the Independent Modules.
 The availability of this Exception does not imply any general
 presumption that third-party software is unaffected by the copyleft
 requirements of the license of GCC.
-