arm: sun8i: h3: drop pinctrl-a10.h inclusion for H3 DTSI

After converting to generic pinconf binding, pinctrl-a10.h is now not
used at all.

Drop its inclusion for H3 DTSI.
Signed-off-by: NIcenowy Zheng <icenowy@aosc.xyz>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun8i-h3.dtsi

@@ -42,7 +42,6 @@
 
 #include <dt-bindings/clock/sun8i-h3-ccu.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
-#include <dt-bindings/pinctrl/sun4i-a10.h>
 #include <dt-bindings/reset/sun8i-h3-ccu.h>
 
 / {