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diff --git a/dep/src/zthread/ThreadQueue.h b/dep/src/zthread/ThreadQueue.h
deleted file mode 100644
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--- a/dep/src/zthread/ThreadQueue.h
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- * Copyright (c) 2005, Eric Crahen
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is furnished
- * to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-
-#ifndef __ZTTHREADQUEUE_H__
-#define __ZTTHREADQUEUE_H__
-
-#include "zthread/Singleton.h"
-#include "zthread/Guard.h"
-#include "FastLock.h"
-
-
-namespace ZThread {
-
-  class ThreadImpl;
-
-  /**
-   * @class ThreadQueue
-   * @version 2.3.0
-   * @author Eric Crahen <http://www.code-foo.com>
-   * @date <2003-07-27T20:52:05-0400>
-   *
-   * A ThreadQueue accumulates references to user and reference threads.
-   * These are threads that are running outside the scope of the Thread
-   * object that created them. ZThreads doesn't have a central manager for
-   * all threads (partly why I renamed the ThreadManager to someting more
-   * appropriate). Instead, ZThreads will discover threads it did not create
-   * and create a reference thread that allows ZThreads to interact with it.
-   * Non user threads that are created by the user never have to touch the
-   * ThreadQueue.
-   */
-  class ThreadQueue : public Singleton<ThreadQueue, StaticInstantiation> {
-
-    typedef std::deque<ThreadImpl*> ThreadList;
-    typedef std::deque<Task> TaskList;
-
-    //! Managed thread lists
-    ThreadList _pendingThreads;
-    ThreadList _referenceThreads;
-    ThreadList _userThreads;
-
-    //! Shutdown handlers
-    TaskList   _shutdownTasks;
-
-    //! Serilize access to the thread list
-    FastLock _lock;
-
-    //! Reference thread waiting to cleanup any user & reference threads
-    ThreadImpl* _waiter;
-
-  public:
-
-    ThreadQueue();
-
-    /**
-     * The thread destroys a ThreadQueue will be a reference thread,
-     * probably the main thread; but it could be another thread that
-     * started and loaded the library.
-     */
-    ~ThreadQueue();
-
-    /**
-     * Insert a user-thread into the queue. User-threads are inserted as they
-     * begin thier task. Once that task completes, user-threads are automatically
-     * transitioned to pending-threads via <i>insertPendingThread()</i>.
-     *
-     * User-threads are known to be executing thier tasks and will be cancel()ed
-     * as the ThreadQueue is destroyed when main() goes out of scope. This sends
-     * a request to the task to complete soon. Once the task exits, the thread is
-     * transitioned to pending-thread status.
-     */
-    void insertUserThread(ThreadImpl*);
-
-    /**
-     * Insert a pending-thread into the queue.
-     *
-     * Pending-threads are known to have completed thier tasks and thier
-     * resources are reclaimed (lazily) as more threads are started or as the
-     * ThreadQueue is destroyed.
-     */
-    void insertPendingThread(ThreadImpl*);
-
-
-    /**
-     * Insert reference thread. Reference threads are not removed until
-     * the ThreadQueue goes out of scope.
-     */
-    void insertReferenceThread(ThreadImpl*);
-
-    /**
-     * Insert a task to be run before threads are joined.
-     * Any items inserted after the ThreadQueue desctructor has begun to
-     * execute will be run() immediately.
-     */
-    void insertShutdownTask(Task&);
-
-    /**
-     * Remove an existing shutdown task.
-     */
-    bool removeShutdownTask(const Task&);
-
-  private:
-
-    void pollPendingThreads();
-
-    void pollUserThreads();
-
-    void pollReferenceThreads();
-
-  };
-
-
-} // namespace ZThread
-
-
-#endif  // __ZTTHREADQUEUE_H__
-