tree: drop last paragraph of GPL copyright header from new files

This continues what was done in commit a73b93157f
(tree: drop last paragraph of GPL copyright header)

Change-Id: Ifb8d2d13f7787657445817bdde8dc15df375e173
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12914
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/mainboard/google/veyron_emile/devicetree.cb

@@ -12,10 +12,6 @@
 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ## GNU General Public License for more details.
 ##
-## You should have received a copy of the GNU General Public License
-## along with this program; if not, write to the Free Software
-## Foundation, Inc.
-##
 
 # TODO fill with Versatile Express board data in QEMU.
 chip soc/rockchip/rk3288