Fix XBee on Windows

src/comm/XbeeLink.cpp

@@ -162,7 +162,6 @@ bool XbeeLink::hardwareConnect()
 	emit tryConnectEnd(true);
 	this->m_connected = true;
 	emit connected();
-	emit connected(true);
 	return true;
 }
 
@@ -185,7 +184,6 @@ bool XbeeLink::_disconnect(void)
 	this->m_connected = false;
 
 	emit disconnected();
-	emit connected(false);
 	return true;
 }
 

src/ui/CommConfigurationWindow.cc

@@ -273,7 +273,6 @@ void CommConfigurationWindow::setLinkType(qgc_link_t linktype)
 			{
 				XbeeLink *xbee = new XbeeLink();
 				tmpLink = xbee;
-				MainWindow::instance()->addLink(tmpLink);
 				break;
 			}
 #endif // QGC_XBEE_ENABLED