Classview: Remove dead code

Change-Id: I753daa24d4ab1c8b03f324a42f36e71697517a9f
Reviewed-on: http://codereview.qt.nokia.com/4088
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>

src/plugins/classview/classviewnavigationwidget.cpp

@@ -194,11 +194,6 @@ void NavigationWidget::onDataUpdate(QSharedPointer<QStandardItem> result)
     if (result.isNull())
         return;
 
-    // if this is 1st call
-    bool expandRootItems = false;
-    if (d->treeModel->invisibleRootItem()->rowCount() == 0)
-        expandRootItems = true;
-
     QTime timer;
     if (debug)
         timer.start();