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diff --git a/deps/node/deps/icu-small/source/common/unicode/unifilt.h b/deps/node/deps/icu-small/source/common/unicode/unifilt.h
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index 99cce785..00000000
--- a/deps/node/deps/icu-small/source/common/unicode/unifilt.h
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@@ -1,122 +0,0 @@
-// © 2016 and later: Unicode, Inc. and others.
-// License & terms of use: http://www.unicode.org/copyright.html
-/*
-**********************************************************************
-* Copyright (C) 1999-2010, International Business Machines Corporation and others.
-* All Rights Reserved.
-**********************************************************************
-*   Date        Name        Description
-*   11/17/99    aliu        Creation.
-**********************************************************************
-*/
-#ifndef UNIFILT_H
-#define UNIFILT_H
-
-#include "unicode/unifunct.h"
-#include "unicode/unimatch.h"
-
-/**
- * \file
- * \brief C++ API: Unicode Filter
- */
-
-U_NAMESPACE_BEGIN
-
-/**
- * U_ETHER is used to represent character values for positions outside
- * a range.  For example, transliterator uses this to represent
- * characters outside the range contextStart..contextLimit-1.  This
- * allows explicit matching by rules and UnicodeSets of text outside a
- * defined range.
- * @stable ICU 3.0
- */
-#define U_ETHER ((char16_t)0xFFFF)
-
-/**
- *
- * <code>UnicodeFilter</code> defines a protocol for selecting a
- * subset of the full range (U+0000 to U+10FFFF) of Unicode characters.
- * Currently, filters are used in conjunction with classes like {@link
- * Transliterator} to only process selected characters through a
- * transformation.
- *
- * <p>Note: UnicodeFilter currently stubs out two pure virtual methods
- * of its base class, UnicodeMatcher.  These methods are toPattern()
- * and matchesIndexValue().  This is done so that filter classes that
- * are not actually used as matchers -- specifically, those in the
- * UnicodeFilterLogic component, and those in tests -- can continue to
- * work without defining these methods.  As long as a filter is not
- * used in an RBT during real transliteration, these methods will not
- * be called.  However, this breaks the UnicodeMatcher base class
- * protocol, and it is not a correct solution.
- *
- * <p>In the future we may revisit the UnicodeMatcher / UnicodeFilter
- * hierarchy and either redesign it, or simply remove the stubs in
- * UnicodeFilter and force subclasses to implement the full
- * UnicodeMatcher protocol.
- *
- * @see UnicodeFilterLogic
- * @stable ICU 2.0
- */
-class U_COMMON_API UnicodeFilter : public UnicodeFunctor, public UnicodeMatcher {
-
-public:
-    /**
-     * Destructor
-     * @stable ICU 2.0
-     */
-    virtual ~UnicodeFilter();
-
-    /**
-     * Returns <tt>true</tt> for characters that are in the selected
-     * subset.  In other words, if a character is <b>to be
-     * filtered</b>, then <tt>contains()</tt> returns
-     * <b><tt>false</tt></b>.
-     * @stable ICU 2.0
-     */
-    virtual UBool contains(UChar32 c) const = 0;
-
-    /**
-     * UnicodeFunctor API.  Cast 'this' to a UnicodeMatcher* pointer
-     * and return the pointer.
-     * @stable ICU 2.4
-     */
-    virtual UnicodeMatcher* toMatcher() const;
-
-    /**
-     * Implement UnicodeMatcher API.
-     * @stable ICU 2.4
-     */
-    virtual UMatchDegree matches(const Replaceable& text,
-                                 int32_t& offset,
-                                 int32_t limit,
-                                 UBool incremental);
-
-    /**
-     * UnicodeFunctor API.  Nothing to do.
-     * @stable ICU 2.4
-     */
-    virtual void setData(const TransliterationRuleData*);
-
-    /**
-     * ICU "poor man's RTTI", returns a UClassID for this class.
-     *
-     * @stable ICU 2.2
-     */
-    static UClassID U_EXPORT2 getStaticClassID();
-
-protected:
-
-    /*
-     * Since this class has pure virtual functions,
-     * a constructor can't be used.
-     * @stable ICU 2.0
-     */
-/*    UnicodeFilter();*/
-};
-
-/*inline UnicodeFilter::UnicodeFilter() {}*/
-
-U_NAMESPACE_END
-
-#endif