Remove widget and parent pointer from AudioTabController

The pointers are not needed and are an anti pattern.

src/overlaycontroller.cpp

@@ -487,7 +487,7 @@ void OverlayController::SetWidget( QQuickItem* quickItem,
     m_steamVRTabController.initStage2( this );
     m_chaperoneTabController.initStage2( this );
     m_fixFloorTabController.initStage2( this );
-    m_audioTabController.initStage2( this, m_pWindow.get() );
+    m_audioTabController.initStage2();
     m_statisticsTabController.initStage2( this, m_pWindow.get() );
     m_settingsTabController.initStage2( this, m_pWindow.get() );
     m_reviveTabController.initStage2( this, m_pWindow.get() );

src/tabcontrollers/AudioTabController.cpp

@@ -56,12 +56,8 @@ void AudioTabController::initStage1()
     eventLoopTick();
 }
 
-void AudioTabController::initStage2( OverlayController* var_parent,
-                                     QQuickWindow* var_widget )
+void AudioTabController::initStage2()
 {
-    this->parent = var_parent;
-    this->widget = var_widget;
-
     std::string notifKey = std::string( application_strings::applicationKey )
                            + ".pptnotification";
 

src/tabcontrollers/AudioTabController.h

@@ -54,9 +54,6 @@ class AudioTabController : public PttController
                     setAudioProfileDefault NOTIFY audioProfileDefaultChanged )
 
 private:
-    OverlayController* parent;
-    QQuickWindow* widget;
-
     vr::VROverlayHandle_t m_ulNotificationOverlayHandle
         = vr::k_ulOverlayHandleInvalid;
 
@@ -118,7 +115,7 @@ private:
 
 public:
     void initStage1();
-    void initStage2( OverlayController* var_parent, QQuickWindow* var_widget );
+    void initStage2();
 
     void reloadAudioSettings();
     void saveAudioSettings();