FIX: refine Warning dialog

Change-Id: I8169dd8bce0013a1acacd837871af2051f5cc3a5

src/slic3r/GUI/PrintOptionsDialog.hpp

@@ -41,9 +41,6 @@ protected:
 
     bool print_halt = false;
 
-    bool is_english_text(wxString str);
-    wxString format_text(wxStaticText* st, wxString str, int warp);
-
 public:
     PrintOptionsDialog(wxWindow* parent);
     ~PrintOptionsDialog();