iomux-v3: remove include of mx6x_pins.h

This include is not needed.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Acked-by: Jason Liu <r64343@freescale.com>

arch/arm/cpu/armv7/mx6/iomux-v3.c

@@ -23,7 +23,6 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/arch/imx-regs.h>
-#include <asm/arch/mx6x_pins.h>
 #include <asm/arch/iomux-v3.h>
 
 static void *base = (void *)IOMUXC_BASE_ADDR;