diff --git a/src/hotspot/share/gc/parallel/gcTaskThread.hpp b/src/hotspot/share/gc/parallel/gcTaskThread.hpp
deleted file mode 100644
index 6646f563573..00000000000
--- a/src/hotspot/share/gc/parallel/gcTaskThread.hpp
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-#ifndef SHARE_GC_PARALLEL_GCTASKTHREAD_HPP
-#define SHARE_GC_PARALLEL_GCTASKTHREAD_HPP
-
-#include "runtime/thread.hpp"
-
-// Forward declarations of classes defined here.
-class GCTaskThread;
-class GCTaskTimeStamp;
-
-// Declarations of classes referenced in this file via pointer.
-class GCTaskManager;
-
-class GCTaskThread : public WorkerThread {
-  friend class GCTaskManager;
-private:
-  // Instance state.
-  GCTaskManager* _manager;              // Manager for worker.
-  const uint     _processor_id;         // Which processor the worker is on.
-
-  GCTaskTimeStamp* _time_stamps;
-  uint _time_stamp_index;
-
-  GCTaskTimeStamp* time_stamp_at(uint index);
-  void add_task_timestamp(const char* name, jlong t_entry, jlong t_exit);
-
-  // Factory create and destroy methods.
-  static GCTaskThread* create(GCTaskManager* manager,
-                              uint           which,
-                              uint           processor_id) {
-    return new GCTaskThread(manager, which, processor_id);
-  }
- public:
-
-  static void destroy(GCTaskThread* manager) {
-    if (manager != NULL) {
-      delete manager;
-    }
-  }
-  // Methods from Thread.
-  bool is_GC_task_thread() const {
-    return true;
-  }
-  virtual void run();
-
-  void print_task_time_stamps();
-
-protected:
-  // Constructor.  Clients use factory, but there could be subclasses.
-  GCTaskThread(GCTaskManager* manager, uint which, uint processor_id);
-  // Destructor: virtual destructor because of virtual methods.
-  virtual ~GCTaskThread();
-  // Accessors.
-  GCTaskManager* manager() const {
-    return _manager;
-  }
-  uint which() const {
-    return id();
-  }
-  uint processor_id() const {
-    return _processor_id;
-  }
-};
-
-class GCTaskTimeStamp : public CHeapObj<mtGC>
-{
- private:
-  jlong  _entry_time;
-  jlong  _exit_time;
-  const char*  _name;
-
- public:
-  jlong entry_time()              { return _entry_time; }
-  jlong exit_time()               { return _exit_time; }
-  const char* name() const        { return _name; }
-
-  void set_entry_time(jlong time) { _entry_time = time; }
-  void set_exit_time(jlong time)  { _exit_time = time; }
-  void set_name(const char* name) { _name = name; }
-};
-
-#endif // SHARE_GC_PARALLEL_GCTASKTHREAD_HPP