diff --git a/lemon/bits/utility.h b/lemon/bits/utility.h
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--- a/lemon/bits/utility.h
+++ /dev/null
@@ -1,140 +0,0 @@
-/* -*- mode: C++; indent-tabs-mode: nil; -*-
- *
- * This file is a part of LEMON, a generic C++ optimization library.
- *
- * Copyright (C) 2003-2008
- * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
- * (Egervary Research Group on Combinatorial Optimization, EGRES).
- *
- * Permission to use, modify and distribute this software is granted
- * provided that this copyright notice appears in all copies. For
- * precise terms see the accompanying LICENSE file.
- *
- * This software is provided "AS IS" with no warranty of any kind,
- * express or implied, and with no claim as to its suitability for any
- * purpose.
- *
- */
-
-// This file contains a modified version of the enable_if library from BOOST.
-// See the appropriate copyright notice below.
-
-// Boost enable_if library
-
-// Copyright 2003 (c) The Trustees of Indiana University.
-
-// Use, modification, and distribution is subject to the Boost Software
-// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
-// http://www.boost.org/LICENSE_1_0.txt)
-
-//    Authors: Jaakko Jarvi (jajarvi at osl.iu.edu)
-//             Jeremiah Willcock (jewillco at osl.iu.edu)
-//             Andrew Lumsdaine (lums at osl.iu.edu)
-
-
-#ifndef LEMON_BITS_UTILITY_H
-#define LEMON_BITS_UTILITY_H
-
-///\file
-///\brief Miscellaneous basic utilities
-///
-///\todo Please rethink the organisation of the basic files like this.
-///E.g. this file might be merged with invalid.h.
-
-
-namespace lemon
-{
-
-  /// Basic type for defining "tags". A "YES" condition for \c enable_if.
-
-  /// Basic type for defining "tags". A "YES" condition for \c enable_if.
-  ///
-  ///\sa False
-  ///
-  /// \todo This should go to a separate "basic_types.h" (or something)
-  /// file.
-  struct True {
-    ///\e
-    static const bool value = true;
-  };
-
-  /// Basic type for defining "tags". A "NO" condition for \c enable_if.
-
-  /// Basic type for defining "tags". A "NO" condition for \c enable_if.
-  ///
-  ///\sa True
-  struct False {
-    ///\e
-    static const bool value = false;
-  };
-
-
-  struct InvalidType {
-  };
-
-  template <typename T>
-  struct Wrap {
-    const T &value;
-    Wrap(const T &t) : value(t) {}
-  };
-
-  /**************** dummy class to avoid ambiguity ****************/
-
-  template<int T> struct dummy { dummy(int) {} };
-
-  /**************** enable_if from BOOST ****************/
-
-  template <typename Type, typename T = void>
-  struct exists {
-    typedef T type;
-  };
-
-
-  template <bool B, class T = void>
-  struct enable_if_c {
-    typedef T type;
-  };
-
-  template <class T>
-  struct enable_if_c<false, T> {};
-
-  template <class Cond, class T = void>
-  struct enable_if : public enable_if_c<Cond::value, T> {};
-
-  template <bool B, class T>
-  struct lazy_enable_if_c {
-    typedef typename T::type type;
-  };
-
-  template <class T>
-  struct lazy_enable_if_c<false, T> {};
-
-  template <class Cond, class T>
-  struct lazy_enable_if : public lazy_enable_if_c<Cond::value, T> {};
-
-
-  template <bool B, class T = void>
-  struct disable_if_c {
-    typedef T type;
-  };
-
-  template <class T>
-  struct disable_if_c<true, T> {};
-
-  template <class Cond, class T = void>
-  struct disable_if : public disable_if_c<Cond::value, T> {};
-
-  template <bool B, class T>
-  struct lazy_disable_if_c {
-    typedef typename T::type type;
-  };
-
-  template <class T>
-  struct lazy_disable_if_c<true, T> {};
-
-  template <class Cond, class T>
-  struct lazy_disable_if : public lazy_disable_if_c<Cond::value, T> {};
-
-} // namespace lemon
-
-#endif