s5j: remove FOTA remnants
Now that no boards based on s5j support OTA, s5j has no reason to
support FOTA. Let's remove all remnants for FOTA in S5J.
#define MIN(a, b) (a > b) ? b : a
-#if defined(CONFIG_BOARD_COREDUMP_FLASH) || defined(CONFIG_BOARD_RAMDUMP_FLASH) || \
- defined(CONFIG_BOARD_FOTA_SUPPORT)
+#if defined(CONFIG_BOARD_COREDUMP_FLASH) || defined(CONFIG_BOARD_RAMDUMP_FLASH)
volatile bool g_sflash_nonsleep_mode = false;
#define usleep(x) \
