Qt: Remove unused variables

src/duckstation-qt/controllerbindingwidgets.h

@@ -85,7 +85,6 @@ private:
   void createWidgets(ControllerBindingWidget* parent);
 
   Ui::ControllerMacroWidget m_ui;
-  ControllerSettingsWindow* m_dialog;
   std::array<ControllerMacroEditWidget*, NUM_MACROS> m_macros;
 };
 

src/duckstation-qt/hotkeysettingswidget.h

@@ -56,7 +56,6 @@ private:
   QScrollArea* m_scroll_area = nullptr;
   Container* m_container = nullptr;
   QVBoxLayout* m_layout = nullptr;
-  QLineEdit* m_search = nullptr;
 
   QMap<QString, CategoryWidgets> m_categories;
 };

src/duckstation-qt/mainwindow.h

@@ -348,7 +348,6 @@ private:
   bool m_hide_mouse_cursor = false;
 
   bool m_exclusive_fullscreen_requested = false;
-  bool m_save_states_invalidated = false;
   bool m_was_paused_on_surface_loss = false;
   bool m_was_disc_change_request = false;
   bool m_is_closing = false;