Remove more unneeded tab widget code

src/controllers/Stack.cpp

@@ -55,11 +55,6 @@ bool Stack::isPositionDraggable(QPoint p) const
     return dynamic_cast<Views::StackViewInterface *>(view())->isPositionDraggable(p);
 }
 
-Controllers::DockWidget *Stack::currentDockWidget() const
-{
-    return m_tabBar->currentDockWidget();
-}
-
 void Stack::addDockWidget(DockWidget *dock)
 {
     insertDockWidget(dock, numDockWidgets());

src/controllers/Stack.h

@@ -35,9 +35,6 @@ public:
      */
     int numDockWidgets() const;
 
-    /// @brief Returns the current dock widget
-    DockWidget *currentDockWidget() const;
-
     /// Sets whether the tab bar should be hidden when there's only 1 tab shown
     /// Default is true.
     /// See Config::Flag_AlwaysShowTabs to change this behaviour

src/qtquick/views/Stack_qtquick.cpp

@@ -28,16 +28,8 @@ Stack_qtquick::Stack_qtquick(Controllers::Stack *controller, QQuickItem *parent)
     , StackViewInterface(controller)
     , m_dockWidgetModel(new DockWidgetModel(this))
 {
-    connect(m_dockWidgetModel, &DockWidgetModel::countChanged, this, [this] {
-        Controllers::DockWidget *currentDw = m_dockWidgetModel->currentDockWidget();
-        if (currentDw && m_dockWidgetModel->indexOf(currentDw) == -1) {
-            // The current dock widget was removed, set the first one as current
-            if (m_stack->numDockWidgets() > 0)
-                m_dockWidgetModel->setCurrentIndex(0);
-        }
-
-        Q_EMIT m_stack->tabBar()->countChanged();
-    });
+    connect(m_dockWidgetModel, &DockWidgetModel::countChanged, this,
+            [this] { Q_EMIT m_stack->tabBar()->countChanged(); });
 }
 
 void Stack_qtquick::init()