[bsp/gd32450z-eval] Remove the w25qxx driver code.

bsp/gd32450z-eval/drivers/drv_spi_flash.c

@@ -20,17 +20,9 @@
 #include "spi_flash_sfud.h"
 #endif
 
-#ifdef RT_USING_W25QXX
-#include "spi_flash_w25qxx.h"
-#endif
-
 #include <rthw.h>
 #include <finsh.h>
 
-#if defined(RT_USING_SFUD) && defined(RT_USING_W25QXX)
-#error "RT_USING_SFUD and RT_USING_W25QXX only need one"
-#endif
-
 #define SPI_PERIPH                  SPI5
 #define SPI_BUS_NAME                "spi5"
 #define SPI_FLASH_DEVICE_NAME       "spi50"
@@ -95,11 +87,3 @@ static int rt_hw_spi_flash_with_sfud_init(void)
 }
 INIT_COMPONENT_EXPORT(rt_hw_spi_flash_with_sfud_init)
 #endif
-
-#ifdef RT_USING_W25QXX
-static int rt_hw_spi_flash_init(void)
-{
-    return w25qxx_init(SPI_FLASH_CHIP, SPI_FLASH_DEVICE_NAME);
-}
-INIT_COMPONENT_EXPORT(rt_hw_spi_flash_init)
-#endif