Remove unnecessary TranslateBookFlag() from the notebook sample.

It probably was needed before, when the flags had different values for
different controls, but is simply unused now.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72405 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

samples/notebook/notebook.h

@@ -97,7 +97,6 @@ private:
 
     void RecreateBook();
     wxPanel *CreateNewPage() const;
-    int TranslateBookFlag(int nb, int lb, int chb, int tbk, int toolbkm, int aui) const;
     void AddFlagStrIfFlagPresent(wxString & flagStr, long flags, long flag, const wxChar * flagName) const;
 
     // Sample setup