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/mac/classic/icon.h

@@ -20,11 +20,6 @@ class WXDLLEXPORT wxIcon: public wxBitmap
 public:
   wxIcon();
 
-  // Copy constructors
-  wxIcon(const wxIcon& icon)
-      : wxBitmap()
-      { Ref(icon); }
-
   wxIcon(const char **data);
   wxIcon(char **data);
   wxIcon(const char bits[], int width , int height );
@@ -41,8 +36,6 @@ public:
   bool LoadFile(const wxString& name ,wxBitmapType flags = wxBITMAP_TYPE_ICON_RESOURCE )
       { return LoadFile( name , flags , -1 , -1 ) ; }
 
-  wxIcon& operator=(const wxIcon& icon)
-    { if (this != &icon) Ref(icon); return *this; }
   bool operator==(const wxIcon& icon) const { return m_refData == icon.m_refData; }
   bool operator!=(const wxIcon& icon) const { return !(*this == icon); }