Remove unused thread pool from standalone VM binary.

runtime/bin/eventhandler_win.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "bin/eventhandler.h"
 
 #include <process.h>
 #include <winsock2.h>
 #include <ws2tcpip.h>
 #include <mswsock.h>
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
 #include "bin/socket.h"
+#include "platform/thread.h"
 
 
 static const int kInfinityTimeout = -1;
 
 
 int64_t GetCurrentTimeMilliseconds() {
   static const int64_t kTimeEpoc = 116444736000000000LL;
 
   // Although win32 uses 64-bit integers for representing timestamps,
   // these are packed into a FILETIME structure. The FILETIME structure
@@ skipping 885 matching lines @@
                                    reinterpret_cast<uword>(this));
   if (result != 0) {
     FATAL1("Failed to start event handler thread %d", result);
   }
 
   // Initialize Winsock32
   if (!Socket::Initialize()) {
     FATAL("Failed to initialized Windows sockets");
   }
 }