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/x11/colour.h

@@ -58,9 +58,6 @@ public:
     // Get colour from name or wxNullColour
     static wxColour CreateByName(const wxString& name);
 
-    wxColour( const wxColour& col ) { Ref(col); }
-    wxColour& operator = ( const wxColour& col ) { Ref(col); return *this; }
-
     ~wxColour();
 
     bool Ok() const { return m_refData != NULL; }