diff --git a/3party/ThreadPool/COPYING b/3party/ThreadPool/COPYING
deleted file mode 100644
index 7d69178f4e..0000000000
--- a/3party/ThreadPool/COPYING
+++ /dev/null
@@ -1,20 +0,0 @@
-Copyright (c) 2012 Jakob Progsch, Václav Zeman
-
-This software is provided 'as-is', without any express or implied
-warranty. In no event will the authors be held liable for any damages
-arising from the use of this software.
-
-Permission is granted to anyone to use this software for any purpose,
-including commercial applications, and to alter it and redistribute it
-freely, subject to the following restrictions:
-
-   1. The origin of this software must not be misrepresented; you must not
-   claim that you wrote the original software. If you use this software
-   in a product, an acknowledgment in the product documentation would be
-   appreciated but is not required.
-
-   2. Altered source versions must be plainly marked as such, and must not be
-   misrepresented as being the original software.
-
-   3. This notice may not be removed or altered from any source
-   distribution.
diff --git a/3party/ThreadPool/README.md b/3party/ThreadPool/README.md
deleted file mode 100644
index be3d25ac4c..0000000000
--- a/3party/ThreadPool/README.md
+++ /dev/null
@@ -1,17 +0,0 @@
-ThreadPool
-==========
-
-A simple C++11 Thread Pool implementation.
-
-Basic usage:
-```c++
-// create thread pool with 4 worker threads
-ThreadPool pool(4);
-
-// enqueue and store future
-auto result = pool.enqueue([](int answer) { return answer; }, 42);
-
-// get result from future
-std::cout << result.get() << std::endl;
-
-```
diff --git a/3party/ThreadPool/ThreadPool.h b/3party/ThreadPool/ThreadPool.h
deleted file mode 100644
index 4183203078..0000000000
--- a/3party/ThreadPool/ThreadPool.h
+++ /dev/null
@@ -1,98 +0,0 @@
-#ifndef THREAD_POOL_H
-#define THREAD_POOL_H
-
-#include <vector>
-#include <queue>
-#include <memory>
-#include <thread>
-#include <mutex>
-#include <condition_variable>
-#include <future>
-#include <functional>
-#include <stdexcept>
-
-class ThreadPool {
-public:
-    ThreadPool(size_t);
-    template<class F, class... Args>
-    auto enqueue(F&& f, Args&&... args) 
-        -> std::future<typename std::result_of<F(Args...)>::type>;
-    ~ThreadPool();
-private:
-    // need to keep track of threads so we can join them
-    std::vector< std::thread > workers;
-    // the task queue
-    std::queue< std::function<void()> > tasks;
-    
-    // synchronization
-    std::mutex queue_mutex;
-    std::condition_variable condition;
-    bool stop;
-};
- 
-// the constructor just launches some amount of workers
-inline ThreadPool::ThreadPool(size_t threads)
-    :   stop(false)
-{
-    for(size_t i = 0;i<threads;++i)
-        workers.emplace_back(
-            [this]
-            {
-                for(;;)
-                {
-                    std::function<void()> task;
-
-                    {
-                        std::unique_lock<std::mutex> lock(this->queue_mutex);
-                        this->condition.wait(lock,
-                            [this]{ return this->stop || !this->tasks.empty(); });
-                        if(this->stop && this->tasks.empty())
-                            return;
-                        task = std::move(this->tasks.front());
-                        this->tasks.pop();
-                    }
-
-                    task();
-                }
-            }
-        );
-}
-
-// add new work item to the pool
-template<class F, class... Args>
-auto ThreadPool::enqueue(F&& f, Args&&... args) 
-    -> std::future<typename std::result_of<F(Args...)>::type>
-{
-    using return_type = typename std::result_of<F(Args...)>::type;
-
-    auto task = std::make_shared< std::packaged_task<return_type()> >(
-            std::bind(std::forward<F>(f), std::forward<Args>(args)...)
-        );
-        
-    std::future<return_type> res = task->get_future();
-    {
-        std::unique_lock<std::mutex> lock(queue_mutex);
-
-        // don't allow enqueueing after stopping the pool
-        if(stop)
-            throw std::runtime_error("enqueue on stopped ThreadPool");
-
-        tasks.emplace([task](){ (*task)(); });
-    }
-    condition.notify_one();
-    return res;
-}
-
-// the destructor joins all threads
-inline ThreadPool::~ThreadPool()
-{
-    {
-        std::unique_lock<std::mutex> lock(queue_mutex);
-        stop = true;
-    }
-    condition.notify_all();
-    for(std::thread &worker: workers)
-        worker.join();
-}
-
-#endif
diff --git a/3party/ThreadPool/example.cpp b/3party/ThreadPool/example.cpp
deleted file mode 100644
index 837277b99d..0000000000
--- a/3party/ThreadPool/example.cpp
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <iostream>
-#include <vector>
-#include <chrono>
-
-#include "ThreadPool.h"
-
-int main()
-{
-    
-    ThreadPool pool(4);
-    std::vector< std::future<int> > results;
-
-    for(int i = 0; i < 8; ++i) {
-        results.emplace_back(
-            pool.enqueue([i] {
-                std::cout << "hello " << i << std::endl;
-                std::this_thread::sleep_for(std::chrono::seconds(1));
-                std::cout << "world " << i << std::endl;
-                return i*i;
-            })
-        );
-    }
-
-    for(auto && result: results)
-        std::cout << result.get() << ' ';
-    std::cout << std::endl;
-    
-    return 0;
-}