Remove testing only Hamlib dummy rig model

Transceiver/HamlibTransceiver.cpp

@@ -65,6 +65,13 @@ namespace
   {
     TransceiverFactory::Transceivers * rigs = reinterpret_cast<TransceiverFactory::Transceivers *> (callback_data);
 
+    // We can't use this one because it is only for testing Hamlib and
+    // would confuse users, possibly causing operating on the wrong frequency!
+    if (RIG_MODEL_DUMMY_NOVFO == caps->rig_model)
+      {
+        return 1;
+      }
+
     QString key;
     if (RIG_MODEL_DUMMY == caps->rig_model)
       {