QmlProfiler: Remove getState() methods

A numerical representation of "state" is not so useful after all.

Change-Id: I7fc3ae08a2fd44000b5543f4ba25730a8d79358d
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

src/plugins/qmlprofiler/qml/MainView.qml

@@ -76,12 +76,6 @@ Rectangle {
 
     Connections {
         target: qmlProfilerModelProxy
-        onStateChanged: {
-            // Clear if model is empty.
-            if (qmlProfilerModelProxy.getState() === 0)
-                root.clear();
-            backgroundMarks.requestPaint()
-        }
         onDataAvailable: {
             view.clearData();
             zoomControl.setRange(qmlProfilerModelProxy.traceStartTime(),
@@ -89,6 +83,7 @@ Rectangle {
                                  qmlProfilerModelProxy.traceDuration()/10);
             view.requestPaint();
         }
+        onStateChanged: backgroundMarks.requestPaint()
         onExpandedChanged: backgroundMarks.requestPaint()
         onRowHeightChanged: backgroundMarks.requestPaint()
     }