zephyr: nucleo_f401re: use flash defines from DTS
#define FLASH_DRIVER_NAME CONFIG_SOC_FLASH_STM32_DEV_NAME
#define FLASH_ALIGN 1
-#define FLASH_AREA_IMAGE_0_OFFSET 0x20000
-#define FLASH_AREA_IMAGE_0_SIZE 0x20000
-#define FLASH_AREA_IMAGE_1_OFFSET 0x40000
-#define FLASH_AREA_IMAGE_1_SIZE 0x20000
-#define FLASH_AREA_IMAGE_SCRATCH_OFFSET 0x60000
-#define FLASH_AREA_IMAGE_SCRATCH_SIZE 0x20000
/* Though sectors have variable size on this part, we've chosen
* three sectors with uniform size here. */
