removed duplicated members which have been moved to wxTreeCtrlBase

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35882 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/treectrl.h

@@ -251,11 +251,6 @@ protected:
     wxTextCtrl  *m_textCtrl;        // text control in which it is edited
     wxTreeItemId m_idEdited;        // the item being edited
 
-    wxImageList *m_imageListNormal, // images for tree elements
-                *m_imageListState;  // special images for app defined states
-    bool         m_ownsImageListNormal,
-                 m_ownsImageListState;
-
 private:
     // the common part of all ctors
     void Init();