Remove widget pointer from SettingsTabController

The pointer is not needed and is an anti pattern.

src/tabcontrollers/SettingsTabController.cpp

@@ -19,11 +19,9 @@ void SettingsTabController::initStage1()
     }
 }
 
-void SettingsTabController::initStage2( OverlayController* var_parent,
-                                        QQuickWindow* var_widget )
+void SettingsTabController::initStage2( OverlayController* var_parent )
 {
     this->parent = var_parent;
-    this->widget = var_widget;
 }
 
 void SettingsTabController::eventLoopTick()

src/tabcontrollers/SettingsTabController.h

@@ -20,7 +20,6 @@ class SettingsTabController : public QObject
 
 private:
     OverlayController* parent;
-    QQuickWindow* widget;
 
     unsigned settingsUpdateCounter = 0;
 
@@ -29,7 +28,7 @@ private:
 
 public:
     void initStage1();
-    void initStage2( OverlayController* parent, QQuickWindow* widget );
+    void initStage2( OverlayController* parent );
 
     void eventLoopTick();