Update HardwareSerial.cpp

Author: Jason2866

cores/esp32/HardwareSerial.cpp

@@ -37,7 +37,7 @@ void serialEvent(void) {}
 #ifndef RX1
 #if CONFIG_IDF_TARGET_ESP32
 #define RX1 9
-#elif CONFIG_IDF_TARGET_ESP32S2 
+#elif CONFIG_IDF_TARGET_ESP32S2
 #define RX1 18
 #elif CONFIG_IDF_TARGET_ESP32C3
 #define RX1 18
@@ -86,8 +86,6 @@ void serialEvent2(void) {}
 #if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_SERIAL)
 #if ARDUINO_USB_CDC_ON_BOOT //Serial used for USB CDC
 HardwareSerial Serial0(0);
-#elif ARDUINO_HW_CDC_ON_BOOT
-HardwareSerial Serial0(0);
 #else
 HardwareSerial Serial(0);
 #endif
@@ -102,8 +100,6 @@ void serialEventRun(void)
 {
 #if ARDUINO_USB_CDC_ON_BOOT //Serial used for USB CDC
     if(Serial0.available()) serialEvent();
-#elif ARDUINO_HW_CDC_ON_BOOT
-    if(Serial0.available()) serialEvent();
 #else
     if(Serial.available()) serialEvent();
 #endif