Update USBTX/USBRX alias

Author: gpsimenos

hal/include/hal/PinNameAliases.h

@@ -21,13 +21,8 @@
 #define MBED_PIN_NAME_ALIASES_H
 
 /* Aliases for legacy reasons. To be removed in the next Mbed OS version */
-#if defined (CONSOLE_TX) && (CONSOLE_RX)
 #define USBTX CONSOLE_TX
 #define USBRX CONSOLE_RX
-#else
-#define CONSOLE_TX USBTX
-#define CONSOLE_RX USBRX
-#endif
 
 #if defined (TARGET_FF_ARDUINO) || (TARGET_FF_ARDUINO_UNO)