STM32H7: undefine USE_SD_TRANSCEIVER

This patch should be surrounded by ifndef

Author: facchinm

targets/TARGET_STM/TARGET_STM32H7/STM32Cube_FW/stm32h7xx_hal_conf.h

@@ -164,7 +164,7 @@
 #define  VDD_VALUE                    ((uint32_t)3300) /*!< Value of VDD in mv */
 #define  TICK_INT_PRIORITY            ((uint32_t)0x0F) /*!< tick interrupt priority */
 #define  USE_RTOS                     0
-#define  USE_SD_TRANSCEIVER           1U               /*!< use uSD Transceiver */
+#define  USE_SD_TRANSCEIVER           0U               /*!< use uSD Transceiver */
 #define  USE_SPI_CRC                  1U               /*!< use CRC in SPI */
 
 #define  USE_HAL_ADC_REGISTER_CALLBACKS     0U /* ADC register callback disabled     */