serial: samsung: no more support for S5P6440 and S5P6450 SoCs

This patch removes s5p64x0 related serial because of removing
support for s5p64x0 SoCs.
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/tty/serial/Kconfig

@@ -238,7 +238,6 @@ config SERIAL_SAMSUNG_UARTS_4
 config SERIAL_SAMSUNG_UARTS
 	int
 	depends on PLAT_SAMSUNG
-	default 6 if CPU_S5P6450
 	default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416
 	default 3
 	help

drivers/tty/serial/samsung.c

@@ -1717,7 +1717,6 @@ static struct s3c24xx_serial_drv_data s3c2440_serial_drv_data = {
 #endif
 
 #if defined(CONFIG_CPU_S3C6400) || defined(CONFIG_CPU_S3C6410) || \
-	defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450) || \
 	defined(CONFIG_CPU_S5PC100)
 static struct s3c24xx_serial_drv_data s3c6400_serial_drv_data = {
 	.info = &(struct s3c24xx_uart_info) {