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/gtk/gauge.h

@@ -82,11 +82,6 @@ public:
     int m_rangeMax,
         m_gaugePos;
 
-    // obsolete functions, don't use
-#if WXWIN_COMPATIBILITY_2_2
-    bool GetProgressBar() const { return true; }
-#endif // WXWIN_COMPATIBILITY_2_2
-
 protected:
     // common part of all ctors
     void Init() { m_rangeMax = m_gaugePos = 0; }