ARM: dts: aspeed: Remove skeleton.dtsi

We don't require it for any of the ASPEED systems.
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Joel Stanley <joel@jms.id.au>

arch/arm/boot/dts/aspeed-g4.dtsi

 // SPDX-License-Identifier: GPL-2.0
-#include "skeleton.dtsi"
 #include <dt-bindings/clock/aspeed-clock.h>
 
 / {

arch/arm/boot/dts/aspeed-g5.dtsi

 // SPDX-License-Identifier: GPL-2.0
-#include "skeleton.dtsi"
 #include <dt-bindings/clock/aspeed-clock.h>
 
 / {