Replace wxOVERRIDE and wxNOEXCEPT with override and noexcept

Don't use deprecated macros in wxWidgets itself.

include/wx/colordlg.h

@@ -57,7 +57,7 @@ public:
     wxColour GetColour() const { return m_colour; }
     void SetColour(const wxColour& colour) { m_colour = colour; }
 
-    virtual wxEvent *Clone() const wxOVERRIDE
+    virtual wxEvent *Clone() const override
     {
         return new wxColourDialogEvent(*this);
     }