Do not setup bluetooth for server mode

esp32_loraprs.ino

@@ -12,7 +12,7 @@
 #define LORAPRS_LOGIN       "NOCALL-0"
 #define LORAPRS_PASS        "00000"
 #else
-#define LORAPRS_BT_NAME     "loraprs_server"
+#define LORAPRS_BT_NAME     ""
 #define LORAPRS_WIFI_SSID   "<mywifi>"
 #define LORAPRS_WIFI_KEY    "<key>"
 #define LORAPRS_LOGIN       "NOCALL-0"

loraprs.cpp

@@ -63,6 +63,7 @@ void LoraPrs::setupLora(int loraFreq)
 
 void LoraPrs::setupBt(String btName) 
 {
+  if (btName.length() != 0) {
     Serial.print("BT init " + btName + "...");
   
     if (serialBt_.begin(btName)) {
@@ -73,6 +74,7 @@ void LoraPrs::setupBt(String btName)
       Serial.println("failed");
     }
   }
+}
 
 void LoraPrs::loop()
 {