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/pen.h

@@ -36,11 +36,6 @@ public:
     wxPen( const wxColour &colour, int width = 1, int style = wxSOLID );
     ~wxPen();
 
-    wxPen( const wxPen& pen )
-        : wxGDIObject()
-        { Ref(pen); }
-    wxPen& operator = ( const wxPen& pen ) { Ref(pen); return *this; }
-
     bool Ok() const { return m_refData != NULL; }
 
     bool operator == ( const wxPen& pen ) const;