SearchBar: Remove unused class variables

Source/Core/DolphinQt2/SearchBar.cpp

@@ -4,7 +4,6 @@
 
 #include "DolphinQt2/SearchBar.h"
 
-#include <QCheckBox>
 #include <QHBoxLayout>
 #include <QLineEdit>
 #include <QPushButton>

Source/Core/DolphinQt2/SearchBar.h

@@ -6,7 +6,6 @@
 
 #include <QWidget>
 
-class QCheckBox;
 class QLineEdit;
 class QPushButton;
 
@@ -25,7 +24,5 @@ private:
   void ConnectWidgets();
 
   QLineEdit* m_search_edit;
-  QCheckBox* m_wii_check;
-  QCheckBox* m_gc_check;
   QPushButton* m_close_button;
 };