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diff --git a/src/third_party/boost-1.56.0/boost/fusion/iterator/mpl/convert_iterator.hpp b/src/third_party/boost-1.56.0/boost/fusion/iterator/mpl/convert_iterator.hpp
deleted file mode 100644
index 54c9ef690fd..00000000000
--- a/src/third_party/boost-1.56.0/boost/fusion/iterator/mpl/convert_iterator.hpp
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@@ -1,62 +0,0 @@
-/*=============================================================================
- Copyright (c) 2001-2011 Joel de Guzman
-
- Distributed under 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)
-==============================================================================*/
-#if !defined(FUSION_CONVERT_ITERATOR_05062005_1218)
-#define FUSION_CONVERT_ITERATOR_05062005_1218
-
-#include <boost/fusion/support/config.hpp>
-#include <boost/fusion/support/is_iterator.hpp>
-#include <boost/mpl/if.hpp>
-#include <boost/mpl/bool.hpp>
-
-namespace boost { namespace fusion
-{
- template <typename Iterator>
- struct mpl_iterator; // forward declaration
-
- // Test T. If it is a fusion iterator, return a reference to it.
- // else, assume it is an mpl iterator.
-
- template <typename T>
- struct convert_iterator
- {
- typedef typename
- mpl::if_<
- is_fusion_iterator<T>
- , T
- , mpl_iterator<T>
- >::type
- type;
-
- BOOST_FUSION_GPU_ENABLED
- static T const&
- call(T const& x, mpl::true_)
- {
- return x;
- }
-
- BOOST_FUSION_GPU_ENABLED
- static mpl_iterator<T>
- call(T const& /*x*/, mpl::false_)
- {
- return mpl_iterator<T>();
- }
-
- BOOST_FUSION_GPU_ENABLED
- static typename
- mpl::if_<
- is_fusion_iterator<T>
- , T const&
- , mpl_iterator<T>
- >::type
- call(T const& x)
- {
- return call(x, is_fusion_iterator<T>());
- }
- };
-}}
-
-#endif