great copy ctor/assignment operators cleanup by Paul Cornett (patch 1307665)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37402 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/brush.h

@@ -36,11 +36,6 @@ public:
     wxBrush( const wxBitmap &stippleBitmap );
     ~wxBrush();
 
-    wxBrush( const wxBrush &brush )
-        : wxBrushBase()
-        { Ref(brush); }
-    wxBrush& operator = ( const wxBrush& brush ) { Ref(brush); return *this; }
-
     bool Ok() const { return m_refData != NULL; }
 
     bool operator == ( const wxBrush& brush ) const;