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diff --git a/deps/node/deps/icu-small/source/common/mutex.h b/deps/node/deps/icu-small/source/common/mutex.h
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--- a/deps/node/deps/icu-small/source/common/mutex.h
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@@ -1,79 +0,0 @@
-// © 2016 and later: Unicode, Inc. and others.
-// License & terms of use: http://www.unicode.org/copyright.html
-/*
-******************************************************************************
-*
-* Copyright (C) 1997-2013, International Business Machines
-* Corporation and others. All Rights Reserved.
-*
-******************************************************************************
-*/
-//----------------------------------------------------------------------------
-// File: mutex.h
-//
-// Lightweight C++ wrapper for umtx_ C mutex functions
-//
-// Author: Alan Liu 1/31/97
-// History:
-// 06/04/97 helena Updated setImplementation as per feedback from 5/21 drop.
-// 04/07/1999 srl refocused as a thin wrapper
-//
-//----------------------------------------------------------------------------
-#ifndef MUTEX_H
-#define MUTEX_H
-
-#include "unicode/utypes.h"
-#include "unicode/uobject.h"
-#include "umutex.h"
-
-U_NAMESPACE_BEGIN
-
-//----------------------------------------------------------------------------
-// Code within that accesses shared static or global data should
-// should instantiate a Mutex object while doing so. You should make your own
-// private mutex where possible.
-
-// For example:
-//
-// UMutex myMutex = U_MUTEX_INITIALIZER;
-//
-// void Function(int arg1, int arg2)
-// {
-// static Object* foo; // Shared read-write object
-// Mutex mutex(&myMutex); // or no args for the global lock
-// foo->Method();
-// // When 'mutex' goes out of scope and gets destroyed here, the lock is released
-// }
-//
-// Note: Do NOT use the form 'Mutex mutex();' as that merely forward-declares a function
-// returning a Mutex. This is a common mistake which silently slips through the
-// compiler!!
-//
-
-class U_COMMON_API Mutex : public UMemory {
-public:
- inline Mutex(UMutex *mutex = NULL);
- inline ~Mutex();
-
-private:
- UMutex *fMutex;
-
- Mutex(const Mutex &other); // forbid copying of this class
- Mutex &operator=(const Mutex &other); // forbid copying of this class
-};
-
-inline Mutex::Mutex(UMutex *mutex)
- : fMutex(mutex)
-{
- umtx_lock(fMutex);
-}
-
-inline Mutex::~Mutex()
-{
- umtx_unlock(fMutex);
-}
-
-U_NAMESPACE_END
-
-#endif //_MUTEX_
-//eof