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/os2/pen.h

@@ -52,11 +52,8 @@ public:
     wxPen( const wxBitmap& rStipple
           ,int             nWidth
          );
-    inline wxPen(const wxPen& rPen) { Ref(rPen); }
     ~wxPen();
 
-    inline wxPen& operator =  (const wxPen& rPen)
-        { if (*this == rPen) return (*this); Ref(rPen); return *this; }
     inline bool   operator == (const wxPen& rPen) const
         { return m_refData == rPen.m_refData; }
     inline bool   operator != (const wxPen& rPen) const