ltlfile: remove unused file

* src/ltlparse/ltlfile.cc, src/ltlparse/ltlfile.hh: Delete.
* src/ltlparse/Makefile.am: Adjust.

src/ltlparse/Makefile.am

 ## -*- coding: utf-8 -*-
-## Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013 Laboratoire de
-## Recherche et Développement de l'Epita (LRDE).
+## Copyright (C) 2008, 2009, 2010, 2011, 2012, 2013, 2014 Laboratoire
+## de Recherche et Développement de l'Epita (LRDE).
 ## Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris
 ## 6 (LIP6), département Systèmes Répartis Coopératifs (SRC),
 ## Université Pierre et Marie Curie.
@@ -53,11 +53,8 @@ EXTRA_DIST = $(LTLPARSE_YY)
 libltlparse_la_SOURCES = \
   fmterror.cc \
   $(FROM_LTLPARSE_YY) \
-  ltlfile.cc \
   ltlscan.ll \
   parsedecl.hh
 
 ltlparse_HEADERS = \
-  ltlfile.hh \
   public.hh
-

src/ltlparse/ltlfile.cc

-// Copyright (C) 2010, 2012 Laboratoire de Recherche et Dveloppement
-// de l'Epita (LRDE).
-//
-// This file is part of Spot, a model checking library.
-//
-// Spot is free software; you can redistribute it and/or modify it
-// under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 3 of the License, or
-// (at your option) any later version.
-//
-// Spot is distributed in the hope that it will be useful, but WITHOUT
-// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
-// License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-#include "ltlfile.hh"
-#include "public.hh"
-
-namespace spot
-{
-  namespace ltl
-  {
-
-    ltl_file::ltl_file(const std::string& filename)
-      : in(filename.c_str())
-    {
-      if (!in)
-	{
-	  std::cerr << "Cannot open " << filename << std::endl;
-	  exit(2);
-	}
-    }
-
-    ltl_file::ltl_file(const char* filename)
-      : in(filename)
-    {
-      if (!in)
-	{
-	  std::cerr << "Cannot open " << filename << std::endl;
-	  exit(2);
-	}
-    }
-
-    const formula* ltl_file::next()
-    {
-      if (!in.good())
-	return 0;
-
-      std::string input;
-      do
-	{
-	  if (!std::getline(in, input))
-	    return 0;
-	}
-      while (input == "");
-
-      spot::ltl::parse_error_list pel;
-      const formula* f = parse(input, pel);
-      int ret = spot::ltl::format_parse_errors(std::cerr, input, pel);
-      if (ret)
-	exit(ret);
-      return f;
-    }
-
-  }
-}

src/ltlparse/ltlfile.hh

-// -*- coding: utf-8 -*-
-// Copyright (C) 2010, 2012, 2013 Laboratoire de Recherche et
-// Développement de l'Epita (LRDE).
-//
-// This file is part of Spot, a model checking library.
-//
-// Spot is free software; you can redistribute it and/or modify it
-// under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 3 of the License, or
-// (at your option) any later version.
-//
-// Spot is distributed in the hope that it will be useful, but WITHOUT
-// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
-// or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
-// License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-#ifndef SPOT_LTLPARSE_LTLFILE_HH
-# define SPOT_LTLPARSE_LTLFILE_HH
-#include <fstream>
-#include "ltlast/formula.hh"
-
-
-namespace spot
-{
-  namespace ltl
-  {
-
-    /// \ingroup ltl_io
-    /// \brief Read LTL formulae from a file, one by one
-    class SPOT_API ltl_file
-    {
-    public:
-      ltl_file(const std::string& filename);
-      ltl_file(const char* filename);
-      /// Return the next parsed LTL formula, and 0 at end of file.
-      const formula* next();
-    private:
-      std::ifstream in;
-    };
-
-  }
-}
-
-#endif