Version check not needed as driver in part of mbed-os

Author: Deepika

components/storage/blockdevice/COMPONENT_SD/SDBlockDevice.cpp

@@ -142,15 +142,6 @@
 #include "mbed_debug.h"
 #include <errno.h>
 
-/* Required version: 5.9.0 and above */
-#if defined(MBED_MAJOR_VERSION) && MBED_MAJOR_VERSION >= 5
-#if (MBED_VERSION < MBED_ENCODE_VERSION(5,9,0))
-#error "Incompatible mbed-os version detected! Required 5.9.0 and above"
-#endif
-#else
-#warning "mbed-os version 5.9.0 or above required"
-#endif
-
 #ifndef MBED_CONF_SD_CMD_TIMEOUT
 #define MBED_CONF_SD_CMD_TIMEOUT                 5000   /*!< Timeout in ms for response */
 #endif