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diff --git a/src/third_party/boost-1.56.0/boost/asio/windows/overlapped_ptr.hpp b/src/third_party/boost-1.56.0/boost/asio/windows/overlapped_ptr.hpp
deleted file mode 100644
index 4c6d4abe589..00000000000
--- a/src/third_party/boost-1.56.0/boost/asio/windows/overlapped_ptr.hpp
+++ /dev/null
@@ -1,118 +0,0 @@
-//
-// windows/overlapped_ptr.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2014 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// 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)
-//
-
-#ifndef BOOST_ASIO_WINDOWS_OVERLAPPED_PTR_HPP
-#define BOOST_ASIO_WINDOWS_OVERLAPPED_PTR_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include <boost/asio/detail/config.hpp>
-
-#if defined(BOOST_ASIO_HAS_WINDOWS_OVERLAPPED_PTR) \
- || defined(GENERATING_DOCUMENTATION)
-
-#include <boost/asio/detail/noncopyable.hpp>
-#include <boost/asio/detail/win_iocp_overlapped_ptr.hpp>
-#include <boost/asio/io_service.hpp>
-
-#include <boost/asio/detail/push_options.hpp>
-
-namespace boost {
-namespace asio {
-namespace windows {
-
-/// Wraps a handler to create an OVERLAPPED object for use with overlapped I/O.
-/**
- * A special-purpose smart pointer used to wrap an application handler so that
- * it can be passed as the LPOVERLAPPED argument to overlapped I/O functions.
- *
- * @par Thread Safety
- * @e Distinct @e objects: Safe.@n
- * @e Shared @e objects: Unsafe.
- */
-class overlapped_ptr
- : private noncopyable
-{
-public:
- /// Construct an empty overlapped_ptr.
- overlapped_ptr()
- : impl_()
- {
- }
-
- /// Construct an overlapped_ptr to contain the specified handler.
- template <typename Handler>
- explicit overlapped_ptr(boost::asio::io_service& io_service,
- BOOST_ASIO_MOVE_ARG(Handler) handler)
- : impl_(io_service, BOOST_ASIO_MOVE_CAST(Handler)(handler))
- {
- }
-
- /// Destructor automatically frees the OVERLAPPED object unless released.
- ~overlapped_ptr()
- {
- }
-
- /// Reset to empty.
- void reset()
- {
- impl_.reset();
- }
-
- /// Reset to contain the specified handler, freeing any current OVERLAPPED
- /// object.
- template <typename Handler>
- void reset(boost::asio::io_service& io_service,
- BOOST_ASIO_MOVE_ARG(Handler) handler)
- {
- impl_.reset(io_service, BOOST_ASIO_MOVE_CAST(Handler)(handler));
- }
-
- /// Get the contained OVERLAPPED object.
- OVERLAPPED* get()
- {
- return impl_.get();
- }
-
- /// Get the contained OVERLAPPED object.
- const OVERLAPPED* get() const
- {
- return impl_.get();
- }
-
- /// Release ownership of the OVERLAPPED object.
- OVERLAPPED* release()
- {
- return impl_.release();
- }
-
- /// Post completion notification for overlapped operation. Releases ownership.
- void complete(const boost::system::error_code& ec,
- std::size_t bytes_transferred)
- {
- impl_.complete(ec, bytes_transferred);
- }
-
-private:
- detail::win_iocp_overlapped_ptr impl_;
-};
-
-} // namespace windows
-} // namespace asio
-} // namespace boost
-
-#include <boost/asio/detail/pop_options.hpp>
-
-#endif // defined(BOOST_ASIO_HAS_WINDOWS_OVERLAPPED_PTR)
- // || defined(GENERATING_DOCUMENTATION)
-
-#endif // BOOST_ASIO_WINDOWS_OVERLAPPED_PTR_HPP