Fix failed connection

MainWindow::loadDataView has been commented out for 9 months now.
Removed commented out code instead of leaving cruft in.

src/ui/MainWindow.cc

@@ -2045,27 +2045,6 @@ void MainWindow::loadMAVLinkView()
     }
 }
 
-//void MainWindow::loadDataView(QString fileName)
-//{
-//    // Plot is now selected, now load data from file
-//    if (dataView)
-//    {
-//        //dataView->setCentralWidget(new QGCDataPlot2D(this));
-//        QGCDataPlot2D *plot = qobject_cast<QGCDataPlot2D*>(dataView->centralWidget());
-//        if (plot)
-//        {
-//            plot->loadFile(fileName);
-//        }
-//    }
-//    /*QStackedWidget *centerStack = dynamic_cast<QStackedWidget*>(centralWidget());
-//    if (centerStack)
-//    {
-//        centerStack->setCurrentWidget(dataView);
-//        dataplotWidget->loadFile(fileName);
-//    }*/
-//}
-
-
 QList<QAction*> MainWindow::listLinkMenuActions()
 {
     return ui.menuNetwork->actions();

src/ui/MainWindow.h

@@ -281,9 +281,6 @@ public slots:
 
     void closeEvent(QCloseEvent* event);
 
-    /** @brief Load data view, allowing to plot flight data */
-//    void loadDataView(QString fileName);
-
     /**
      * @brief Shows a Widget from the center stack based on the action sender
      *

src/ui/linechart/Linecharts.cc

@@ -22,8 +22,6 @@ Linecharts::Linecharts(QWidget *parent) :
             this, SLOT(addSystem(UASInterface*)));
     connect(UASManager::instance(), SIGNAL(activeUASSet(int)),
             this, SLOT(selectSystem(int)));
-    connect(this, SIGNAL(logfileWritten(QString)),
-            MainWindow::instance(), SLOT(loadDataView(QString)));
 }
 
 void Linecharts::showEvent(QShowEvent* event)