Qnx: Streamline device construction

Remove some functions and ctors.

Change-Id: I2b7d5fd0ec5bab0246967b2742f1d3e142f930da
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/qnx/qnxdevice.cpp

@@ -78,20 +78,6 @@ class QnxPortsGatheringMethod : public PortsGatheringMethod
 };
 
 QnxDevice::QnxDevice()
-{
-    init();
-}
-
-QnxDevice::QnxDevice(const QString &name, Origin origin, Core::Id id)
-{
-    setupId(origin, id);
-    setDisplayName(name);
-    init();
-}
-
-QnxDevice::QnxDevice(const QnxDevice &other) = default;
-
-void QnxDevice::init()
 {
     addDeviceAction({tr("Deploy Qt libraries..."), [](const IDevice::Ptr &device, QWidget *parent) {
         QnxDeployQtLibrariesDialog dialog(device, parent);
@@ -99,16 +85,6 @@ void QnxDevice::init()
     }});
 }
 
-QnxDevice::Ptr QnxDevice::create()
-{
-    return Ptr(new QnxDevice);
-}
-
-QnxDevice::Ptr QnxDevice::create(const QString &name, Origin origin, Core::Id id)
-{
-    return Ptr(new QnxDevice(name, origin, id));
-}
-
 QString QnxDevice::displayType() const
 {
     return tr("QNX");