removed WXWIN_COMPATIBILITY_2_4 from common and wxMSW files (patch 1675546)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44625 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/tabg.h

@@ -102,11 +102,7 @@ public:
   virtual ~wxTabView();
 
   inline int GetNumberOfLayers() const { return m_layers.GetCount(); }
-#if WXWIN_COMPATIBILITY_2_4
-  inline wxList& GetLayers() { return *(wxList *)&m_layers; }
-#else
   inline wxTabLayerList& GetLayers() { return m_layers; }
-#endif
 
   inline void SetWindow(wxWindow* wnd) { m_window = wnd; }
   inline wxWindow* GetWindow(void) const { return m_window; }