Remove preemption thread and API

include/v8.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5228 matching lines @@
 
 class V8_EXPORT Locker {
  public:
   /**
    * Initialize Locker for a given Isolate.
    */
   V8_INLINE explicit Locker(Isolate* isolate) { Initialize(isolate); }
 
   ~Locker();
 
-  V8_DEPRECATED("This will be remvoed.",
-                static void StartPreemption(Isolate *isolate, int every_n_ms));
-
-  V8_DEPRECATED("This will be removed",
-                static void StopPreemption(Isolate* isolate));
-
   /**
    * Returns whether or not the locker for a given isolate, is locked by the
    * current thread.
    */
   static bool IsLocked(Isolate* isolate);
 
   /**
    * Returns whether v8::Locker is being used by this V8 instance.
    */
   static bool IsActive();
@@ skipping 1274 matching lines @@
  */
 
 
 }  // namespace v8
 
 
 #undef TYPE_CHECK
 
 
 #endif  // V8_H_