QmlDesigner: Remove rootQmlItemNode

Change-Id: I5a3ae428b210d1f09d8a3239fe56d887f92dac4c
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>

src/plugins/qmldesigner/components/stateseditor/stateseditorview.cpp

@@ -180,7 +180,7 @@ void StatesEditorView::createNewState()
 void StatesEditorView::addState()
 {
     // can happen when root node is e.g. a ListModel
-    if (!rootQmlItemNode().isValid())
+    if (!QmlItemNode::isValidQmlItemNode(rootModelNode()))
         return;
 
     QStringList modelStateNames = rootStateGroup().names();

src/plugins/qmldesigner/designercore/include/qmlmodelview.h

@@ -51,11 +51,6 @@ public:
     QmlModelView(QObject *parent) ;
 
 
-
-
-    QmlItemNode rootQmlItemNode() const;
-
-
 };
 
 } //QmlDesigner

src/plugins/qmldesigner/designercore/model/qmlmodelview.cpp

@@ -55,10 +55,4 @@ QmlModelView::QmlModelView(QObject *parent)
     : AbstractView(parent)
 {
 }
-
-QmlItemNode QmlModelView::rootQmlItemNode() const
-{
-    return QmlItemNode(rootModelNode());
-}
-
 } //QmlDesigner