Delete useless *.cc files in ltlast/

src/ltlast/refformula.cc

@@ -1,58 +0,0 @@
-// Copyright (C) 2003, 2004  Laboratoire d'Informatique de Paris 6 (LIP6),
-// département Systèmes Répartis Coopératifs (SRC), Université Pierre
-// et Marie Curie.
-//
-// 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 2 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 Spot; see the file COPYING.  If not, write to the Free
-// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-// 02111-1307, USA.
-
-#include "refformula.hh"
-#include <cassert>
-
-namespace spot
-{
-  namespace ltl
-  {
-    ref_formula::ref_formula()
-      : ref_counter_(0)
-    {
-    }
-
-    ref_formula::~ref_formula()
-    {
-    }
-
-    void
-    ref_formula::ref_()
-    {
-      ++ref_counter_;
-    }
-
-    bool
-    ref_formula::unref_()
-    {
-      assert(ref_counter_ > 0);
-      return !--ref_counter_;
-    }
-
-    unsigned
-    ref_formula::ref_count_()
-    {
-      return ref_counter_;
-    }
-
-  }
-}