fix redundant segger init

src/main.cpp

@@ -313,10 +313,6 @@ void setup()
     SEGGER_RTT_ConfigUpBuffer(SEGGER_STDOUT_CH, NULL, NULL, buflen, mode);
 #endif
 
-#ifdef USE_SEGGER
-    SEGGER_RTT_ConfigUpBuffer(0, NULL, NULL, 0, SEGGER_RTT_MODE_NO_BLOCK_TRIM);
-#endif
-
 #ifdef DEBUG_PORT
     if (!radioConfig.preferences.serial_disabled) {
         consoleInit(); // Set serial baud rate and init our mesh console