Qt2: remove unused variables

Source/Core/DolphinQt2/Config/Mapping/MappingBool.h

@@ -26,5 +26,4 @@ private:
 
   MappingWidget* m_parent;
   ControllerEmu::BooleanSetting* m_setting;
-  double m_range;
 };

Source/Core/DolphinQt2/Settings/InterfacePane.cpp

@@ -52,7 +52,6 @@ void InterfacePane::CreateUI()
   combobox_layout->addRow(tr("&Language:"), m_combobox_language);
 
   // Theme Combobox
-  auto* theme_layout = new QFormLayout;
   m_combobox_theme = new QComboBox;
   m_combobox_theme->setMaximumWidth(300);
   combobox_layout->addRow(tr("&Theme:"), m_combobox_theme);