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diff --git a/src/third_party/boost-1.56.0/boost/asio/detail/win_fd_set_adapter.hpp b/src/third_party/boost-1.56.0/boost/asio/detail/win_fd_set_adapter.hpp
deleted file mode 100644
index 89f5ffdbef2..00000000000
--- a/src/third_party/boost-1.56.0/boost/asio/detail/win_fd_set_adapter.hpp
+++ /dev/null
@@ -1,151 +0,0 @@
-//
-// detail/win_fd_set_adapter.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_DETAIL_WIN_FD_SET_ADAPTER_HPP
-#define BOOST_ASIO_DETAIL_WIN_FD_SET_ADAPTER_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_WINDOWS) || defined(__CYGWIN__)
-
-#include <boost/asio/detail/noncopyable.hpp>
-#include <boost/asio/detail/reactor_op_queue.hpp>
-#include <boost/asio/detail/socket_types.hpp>
-
-#include <boost/asio/detail/push_options.hpp>
-
-namespace boost {
-namespace asio {
-namespace detail {
-
-// Adapts the FD_SET type to meet the Descriptor_Set concept's requirements.
-class win_fd_set_adapter : noncopyable
-{
-public:
- enum { default_fd_set_size = 1024 };
-
- win_fd_set_adapter()
- : capacity_(default_fd_set_size),
- max_descriptor_(invalid_socket)
- {
- fd_set_ = static_cast<win_fd_set*>(::operator new(
- sizeof(win_fd_set) - sizeof(SOCKET)
- + sizeof(SOCKET) * (capacity_)));
- fd_set_->fd_count = 0;
- }
-
- ~win_fd_set_adapter()
- {
- ::operator delete(fd_set_);
- }
-
- void reset()
- {
- fd_set_->fd_count = 0;
- max_descriptor_ = invalid_socket;
- }
-
- bool set(socket_type descriptor)
- {
- for (u_int i = 0; i < fd_set_->fd_count; ++i)
- if (fd_set_->fd_array[i] == descriptor)
- return true;
-
- reserve(fd_set_->fd_count + 1);
- fd_set_->fd_array[fd_set_->fd_count++] = descriptor;
- return true;
- }
-
- void set(reactor_op_queue<socket_type>& operations, op_queue<operation>&)
- {
- reactor_op_queue<socket_type>::iterator i = operations.begin();
- while (i != operations.end())
- {
- reactor_op_queue<socket_type>::iterator op_iter = i++;
- reserve(fd_set_->fd_count + 1);
- fd_set_->fd_array[fd_set_->fd_count++] = op_iter->first;
- }
- }
-
- bool is_set(socket_type descriptor) const
- {
- return !!__WSAFDIsSet(descriptor,
- const_cast<fd_set*>(reinterpret_cast<const fd_set*>(fd_set_)));
- }
-
- operator fd_set*()
- {
- return reinterpret_cast<fd_set*>(fd_set_);
- }
-
- socket_type max_descriptor() const
- {
- return max_descriptor_;
- }
-
- void perform(reactor_op_queue<socket_type>& operations,
- op_queue<operation>& ops) const
- {
- for (u_int i = 0; i < fd_set_->fd_count; ++i)
- operations.perform_operations(fd_set_->fd_array[i], ops);
- }
-
-private:
- // This structure is defined to be compatible with the Windows API fd_set
- // structure, but without being dependent on the value of FD_SETSIZE. We use
- // the "struct hack" to allow the number of descriptors to be varied at
- // runtime.
- struct win_fd_set
- {
- u_int fd_count;
- SOCKET fd_array[1];
- };
-
- // Increase the fd_set_ capacity to at least the specified number of elements.
- void reserve(u_int n)
- {
- if (n <= capacity_)
- return;
-
- u_int new_capacity = capacity_ + capacity_ / 2;
- if (new_capacity < n)
- new_capacity = n;
-
- win_fd_set* new_fd_set = static_cast<win_fd_set*>(::operator new(
- sizeof(win_fd_set) - sizeof(SOCKET)
- + sizeof(SOCKET) * (new_capacity)));
-
- new_fd_set->fd_count = fd_set_->fd_count;
- for (u_int i = 0; i < fd_set_->fd_count; ++i)
- new_fd_set->fd_array[i] = fd_set_->fd_array[i];
-
- ::operator delete(fd_set_);
- fd_set_ = new_fd_set;
- capacity_ = new_capacity;
- }
-
- win_fd_set* fd_set_;
- u_int capacity_;
- socket_type max_descriptor_;
-};
-
-} // namespace detail
-} // namespace asio
-} // namespace boost
-
-#include <boost/asio/detail/pop_options.hpp>
-
-#endif // defined(BOOST_ASIO_WINDOWS) || defined(__CYGWIN__)
-
-#endif // BOOST_ASIO_DETAIL_WIN_FD_SET_ADAPTER_HPP