Fix SKR test for ONBOARD SD

Marlin/src/pins/stm32/pins_BTT_SKR_PRO_V1_1.h

 // Onboard SD card
 //   NOT compatible with LCD
 //
-#if SDCARD_CONNECTION == ONBOARD && !defined(HAS_SPI_LCD)
+#if SDCARD_CONNECTION == ONBOARD && !HAS_SPI_LCD
   #define SOFTWARE_SPI            // Use soft SPI for onboard SD
   #define SDSS             PA4
   #define SCK_PIN          PA5