Removed WXWIN_COMPATIBILITY_2_2 together with code guarded by it.

Changed default for WXWIN_COMPATIBILITY_2_4 to 0.
  Added WXWIN_COMPATIBILITY_2_6 (defaults to 1).
  Ran build/update-setup-h.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35858 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/treebase.h

@@ -300,11 +300,6 @@ public:
     void SetToolTip(const wxString& toolTip) { m_label = toolTip; }
     wxString GetToolTip() { return m_label; }
 
-#if WXWIN_COMPATIBILITY_2_2
-    // for compatibility only, don't use
-    wxDEPRECATED( int GetCode() const);
-#endif // WXWIN_COMPATIBILITY_2_2
-
 private:
     // not all of the members are used (or initialized) for all events
     wxKeyEvent    m_evtKey;