ARM: S3C2412: Remove useless codes mach-s3c2412/gpio.c

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s3c24xx/include/mach/hardware.h

@@ -23,12 +23,6 @@ extern int s3c2440_set_dsc(unsigned int pin, unsigned int value);
 
 #endif /* CONFIG_CPU_S3C2440 */
 
-#ifdef CONFIG_CPU_S3C2412
-
-extern int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state);
-
-#endif /* CONFIG_CPU_S3C2412 */
-
 #endif /* __ASSEMBLY__ */
 
 #include <asm/sizes.h>