ARM: sun4i: dt: Remove chosen nodes

The chosen nodes are nowadays pretty useless, since they will be overriden by
the bootloader anyway.

We can thus safely remove them.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

arch/arm/boot/dts/sun4i-a10-cubieboard.dts

@@ -17,10 +17,6 @@ / {
 	model = "Cubietech Cubieboard";
 	compatible = "cubietech,a10-cubieboard", "allwinner,sun4i-a10";
 
-	chosen {
-		bootargs = "earlyprintk console=ttyS0,115200";
-	};
-
 	soc@01c00000 {
 		emac: ethernet@01c0b000 {
 			pinctrl-names = "default";

arch/arm/boot/dts/sun4i-a10-hackberry.dts

@@ -18,10 +18,6 @@ / {
 	model = "Miniand Hackberry";
 	compatible = "miniand,hackberry", "allwinner,sun4i-a10";
 
-	chosen {
-		bootargs = "earlyprintk console=ttyS0,115200";
-	};
-
 	soc@01c00000 {
 		emac: ethernet@01c0b000 {
 			pinctrl-names = "default";

arch/arm/boot/dts/sun4i-a10-mini-xplus.dts

@@ -18,10 +18,6 @@ / {
 	model = "PineRiver Mini X-Plus";
 	compatible = "pineriver,mini-xplus", "allwinner,sun4i-a10";
 
-	chosen {
-		bootargs = "earlyprintk console=ttyS0,115200";
-	};
-
 	soc@01c00000 {
 		uart0: serial@01c28000 {
 			pinctrl-names = "default";

arch/arm/boot/dts/sun5i-a13-olinuxino.dts

@@ -18,10 +18,6 @@ / {
 	model = "Olimex A13-Olinuxino";
 	compatible = "olimex,a13-olinuxino", "allwinner,sun5i-a13";
 
-	chosen {
-		bootargs = "earlyprintk console=ttyS0,115200";
-	};
-
 	soc@01c00000 {
 		pinctrl@01c20800 {
 			led_pins_olinuxino: led_pins@0 {