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diff --git a/src/third_party/boost-1.68.0/boost/chrono/detail/inlined/win/chrono.hpp b/src/third_party/boost-1.68.0/boost/chrono/detail/inlined/win/chrono.hpp
deleted file mode 100644
index e61f11e7cec..00000000000
--- a/src/third_party/boost-1.68.0/boost/chrono/detail/inlined/win/chrono.hpp
+++ /dev/null
@@ -1,150 +0,0 @@
-// win/chrono.cpp --------------------------------------------------------------//
-
-// Copyright Beman Dawes 2008
-// Copyright 2009-2010 Vicente J. Botet Escriba
-
-// Distributed under the Boost Software License, Version 1.0.
-// See http://www.boost.org/LICENSE_1_0.txt
-
-//----------------------------------------------------------------------------//
-// Windows //
-//----------------------------------------------------------------------------//
-#ifndef BOOST_CHRONO_DETAIL_INLINED_WIN_CHRONO_HPP
-#define BOOST_CHRONO_DETAIL_INLINED_WIN_CHRONO_HPP
-
-#include <boost/detail/winapi/time.hpp>
-#include <boost/detail/winapi/timers.hpp>
-#include <boost/detail/winapi/get_last_error.hpp>
-#include <boost/assert.hpp>
-
-namespace boost
-{
-namespace chrono
-{
-namespace chrono_detail
-{
-
- BOOST_CHRONO_INLINE double get_nanosecs_per_tic() BOOST_NOEXCEPT
- {
- boost::detail::winapi::LARGE_INTEGER_ freq;
- if ( !boost::detail::winapi::QueryPerformanceFrequency( &freq ) )
- return 0.0L;
- return double(1000000000.0L / freq.QuadPart);
- }
-
-}
-
- steady_clock::time_point steady_clock::now() BOOST_NOEXCEPT
- {
- double nanosecs_per_tic = chrono_detail::get_nanosecs_per_tic();
-
- boost::detail::winapi::LARGE_INTEGER_ pcount;
- if ( nanosecs_per_tic <= 0.0L )
- {
- BOOST_ASSERT(0 && "Boost::Chrono - get_nanosecs_per_tic Internal Error");
- return steady_clock::time_point();
- }
- unsigned times=0;
- while ( ! boost::detail::winapi::QueryPerformanceCounter( &pcount ) )
- {
- if ( ++times > 3 )
- {
- BOOST_ASSERT(0 && "Boost::Chrono - QueryPerformanceCounter Internal Error");
- return steady_clock::time_point();
- }
- }
-
- return steady_clock::time_point(steady_clock::duration(
- static_cast<steady_clock::rep>((nanosecs_per_tic) * pcount.QuadPart)));
- }
-
-
-#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
- steady_clock::time_point steady_clock::now( system::error_code & ec )
- {
- double nanosecs_per_tic = chrono_detail::get_nanosecs_per_tic();
-
- boost::detail::winapi::LARGE_INTEGER_ pcount;
- if ( (nanosecs_per_tic <= 0.0L)
- || (!boost::detail::winapi::QueryPerformanceCounter( &pcount )) )
- {
- boost::detail::winapi::DWORD_ cause =
- ((nanosecs_per_tic <= 0.0L)
- ? ERROR_NOT_SUPPORTED
- : boost::detail::winapi::GetLastError());
- if (BOOST_CHRONO_IS_THROWS(ec)) {
- boost::throw_exception(
- system::system_error(
- cause,
- BOOST_CHRONO_SYSTEM_CATEGORY,
- "chrono::steady_clock" ));
- }
- else
- {
- ec.assign( cause, BOOST_CHRONO_SYSTEM_CATEGORY );
- return steady_clock::time_point(duration(0));
- }
- }
-
- if (!BOOST_CHRONO_IS_THROWS(ec))
- {
- ec.clear();
- }
- return time_point(duration(
- static_cast<steady_clock::rep>(nanosecs_per_tic * pcount.QuadPart)));
- }
-#endif
-
- BOOST_CHRONO_INLINE
- system_clock::time_point system_clock::now() BOOST_NOEXCEPT
- {
- boost::detail::winapi::FILETIME_ ft;
- boost::detail::winapi::GetSystemTimeAsFileTime( &ft ); // never fails
- return system_clock::time_point(
- system_clock::duration(
- ((static_cast<__int64>( ft.dwHighDateTime ) << 32) | ft.dwLowDateTime)
- - 116444736000000000LL
- //- (134775LL*864000000000LL)
- )
- );
- }
-
-#if !defined BOOST_CHRONO_DONT_PROVIDE_HYBRID_ERROR_HANDLING
- BOOST_CHRONO_INLINE
- system_clock::time_point system_clock::now( system::error_code & ec )
- {
- boost::detail::winapi::FILETIME_ ft;
- boost::detail::winapi::GetSystemTimeAsFileTime( &ft ); // never fails
- if (!BOOST_CHRONO_IS_THROWS(ec))
- {
- ec.clear();
- }
- return system_clock::time_point(
- system_clock::duration(
- ((static_cast<__int64>( ft.dwHighDateTime ) << 32) | ft.dwLowDateTime)
- - 116444736000000000LL
- //- (134775LL*864000000000LL)
- ));
- }
-#endif
-
- BOOST_CHRONO_INLINE
- std::time_t system_clock::to_time_t(const system_clock::time_point& t) BOOST_NOEXCEPT
- {
- __int64 temp = t.time_since_epoch().count();
- temp /= 10000000;
- return static_cast<std::time_t>( temp );
- }
-
- BOOST_CHRONO_INLINE
- system_clock::time_point system_clock::from_time_t(std::time_t t) BOOST_NOEXCEPT
- {
- __int64 temp = t;
- temp *= 10000000;
- return time_point(duration(temp));
- }
-
-} // namespace chrono
-} // namespace boost
-
-#endif