Revert "ARM: dts: twl4030: Add iio properties for bci subnode"

This reverts commit af19161a,
which breaks the omap3 device tree build due to a wrong reference.

I accidently queued this change via the power supply subsystem while
telling Marek at the same time, that it should go through Tony.
Following that I did miss Stephen's messages about the build failure in
linux-next and since he switched to merging an older snapshot nobody
else noticed the problem in my tree. I didn't notice myself, since I
did not build any device tree files assuming none have changed by me.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Reported-by: Felipe Balbi <balbi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/twl4030.dtsi

@@ -22,8 +22,6 @@ rtc {
 	charger: bci {
 		compatible = "ti,twl4030-bci";
 		interrupts = <9>, <2>;
-		io-channels = <&twl4030_madc 11>;
-		io-channel-name = "vac";
 		bci3v1-supply = <&vusb3v1>;
 	};