QmlDesigner: Remove output pane default workaround

Remove the workaround that always opens the Application Output when
the Output Pane view opens. This is no longer needed as the last used
output pane index is stored in the settings and used whenever the
output pane is opened the first time.

Change-Id: Ifbe6c60b5331489faff4bb0bce30c3f6fef8fba6
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmldesigner/designmodewidget.cpp

@@ -348,15 +348,6 @@ void DesignModeWidget::setup()
         command->setAttribute(Core::Command::CA_Hide);
         viewCommands.append(command);
 
-        connect(command->action(), &QAction::triggered, this, [command]() {
-            if (!command->action()->isChecked())
-                return;
-
-            auto cmd = Core::ActionManager::command("QtCreator.Pane.ApplicationOutput");
-            QTC_ASSERT(cmd, return);
-            cmd->action()->trigger();
-        });
-
         connect(outputPanePlaceholder,
                 &Core::OutputPanePlaceHolder::visibilityChangeRequested,
                 m_outputPaneDockWidget,