ARM: dts: am335x-boneblack: remove use of ti,vcc-aux-disable-is-sleep

Remove use of property ti,vcc-aux-disable-is-sleep, which does not
exist.
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-boneblack.dts

@@ -26,7 +26,6 @@ &mmc2 {
 	pinctrl-0 = <&emmc_pins>;
 	bus-width = <8>;
 	status = "okay";
-	ti,vcc-aux-disable-is-sleep;
 };
 
 &am33xx_pinmux {