ARM: delete old reference to ARM_GPIOLIB_COMPLEX

This inclusion guard became pointless after commit
40ca061b1b
"ARM: 7841/1: sa1100: remove complex GPIO interface"
which removed the last complex gpiolib interface.

Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

arch/arm/include/asm/gpio.h

@@ -5,7 +5,6 @@
 #define ARCH_NR_GPIOS CONFIG_ARCH_NR_GPIO
 #endif
 
-#ifndef __ARM_GPIOLIB_COMPLEX
 /* Note: this may rely upon the value of ARCH_NR_GPIOS set in mach/gpio.h */
 #include <asm-generic/gpio.h>
 
@@ -13,7 +12,6 @@
 #define gpio_get_value  __gpio_get_value
 #define gpio_set_value  __gpio_set_value
 #define gpio_cansleep   __gpio_cansleep
-#endif
 
 /*
  * Provide a default gpio_to_irq() which should satisfy every case.