QmlProfiler: Don't hide/show trace view when loading and saving

This was a workaround to compensate for the fact that windows in window
containers don't follow the stacking order and thus the state widget
wasn't shown. With QQuickWidget we don't need to do this anymore.

Change-Id: I2c1e57d891bee6284ef9f033b8747df4b153271b
Task-number: QTCREATORBUG-11833
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>

src/plugins/qmlprofiler/qmlprofilertraceview.h

@@ -51,8 +51,7 @@ class QmlProfilerTraceView : public QWidget
 public:
     explicit QmlProfilerTraceView(QWidget *parent, QmlProfilerTool *profilerTool,
                                   QmlProfilerViewManager *container,
-                                  QmlProfilerModelManager *modelManager,
-                                  QmlProfilerStateManager *profilerState);
+                                  QmlProfilerModelManager *modelManager);
     ~QmlProfilerTraceView();
 
     bool hasValidSelection() const;
@@ -68,7 +67,6 @@ public slots:
 
 private slots:
     void updateCursorPosition();
-    void profilerDataModelStateChanged();
 
 protected:
     virtual void contextMenuEvent(QContextMenuEvent *event);