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diff --git a/deps/node/deps/icu-small/source/common/ucasemap_imp.h b/deps/node/deps/icu-small/source/common/ucasemap_imp.h
deleted file mode 100644
index 7788fd93..00000000
--- a/deps/node/deps/icu-small/source/common/ucasemap_imp.h
+++ /dev/null
@@ -1,282 +0,0 @@
-// © 2017 and later: Unicode, Inc. and others.
-// License & terms of use: http://www.unicode.org/copyright.html
-
-// ucasemap_imp.h
-// created: 2017feb08 Markus W. Scherer
-
-#ifndef __UCASEMAP_IMP_H__
-#define __UCASEMAP_IMP_H__
-
-#include "unicode/utypes.h"
-#include "unicode/ucasemap.h"
-#include "unicode/uchar.h"
-#include "ucase.h"
-
-/**
- * Bit mask for the titlecasing iterator options bit field.
- * Currently only 3 out of 8 values are used:
- * 0 (words), U_TITLECASE_WHOLE_STRING, U_TITLECASE_SENTENCES.
- * See stringoptions.h.
- * @internal
- */
-#define U_TITLECASE_ITERATOR_MASK 0xe0
-
-/**
- * Bit mask for the titlecasing index adjustment options bit set.
- * Currently two bits are defined:
- * U_TITLECASE_NO_BREAK_ADJUSTMENT, U_TITLECASE_ADJUST_TO_CASED.
- * See stringoptions.h.
- * @internal
- */
-#define U_TITLECASE_ADJUSTMENT_MASK 0x600
-
-/**
- * Internal API, used by u_strcasecmp() etc.
- * Compare strings case-insensitively,
- * in code point order or code unit order.
- */
-U_CFUNC int32_t
-u_strcmpFold(const UChar *s1, int32_t length1,
-             const UChar *s2, int32_t length2,
-             uint32_t options,
-             UErrorCode *pErrorCode);
-
-/**
- * Internal API, used for detecting length of
- * shared prefix case-insensitively.
- * @param s1            input string 1
- * @param length1       length of string 1, or -1 (NULL terminated)
- * @param s2            input string 2
- * @param length2       length of string 2, or -1 (NULL terminated)
- * @param options       compare options
- * @param matchLen1     (output) length of partial prefix match in s1
- * @param matchLen2     (output) length of partial prefix match in s2
- * @param pErrorCode    receives error status
- */
-U_CAPI void
-u_caseInsensitivePrefixMatch(const UChar *s1, int32_t length1,
-                             const UChar *s2, int32_t length2,
-                             uint32_t options,
-                             int32_t *matchLen1, int32_t *matchLen2,
-                             UErrorCode *pErrorCode);
-
-#ifdef __cplusplus
-
-U_NAMESPACE_BEGIN
-
-class BreakIterator;        // unicode/brkiter.h
-class ByteSink;
-class Locale;               // unicode/locid.h
-
-/** Returns TRUE if the options are valid. Otherwise FALSE, and sets an error. */
-inline UBool ustrcase_checkTitleAdjustmentOptions(uint32_t options, UErrorCode &errorCode) {
-    if (U_FAILURE(errorCode)) { return FALSE; }
-    if ((options & U_TITLECASE_ADJUSTMENT_MASK) == U_TITLECASE_ADJUSTMENT_MASK) {
-        // Both options together.
-        errorCode = U_ILLEGAL_ARGUMENT_ERROR;
-        return FALSE;
-    }
-    return TRUE;
-}
-
-inline UBool ustrcase_isLNS(UChar32 c) {
-    // Letter, number, symbol,
-    // or a private use code point because those are typically used as letters or numbers.
-    // Consider modifier letters only if they are cased.
-    const uint32_t LNS = (U_GC_L_MASK|U_GC_N_MASK|U_GC_S_MASK|U_GC_CO_MASK) & ~U_GC_LM_MASK;
-    int gc = u_charType(c);
-    return (U_MASK(gc) & LNS) != 0 || (gc == U_MODIFIER_LETTER && ucase_getType(c) != UCASE_NONE);
-}
-
-#if !UCONFIG_NO_BREAK_ITERATION
-
-/** Returns nullptr if error. Pass in either locale or locID, not both. */
-U_CFUNC
-BreakIterator *ustrcase_getTitleBreakIterator(
-        const Locale *locale, const char *locID, uint32_t options, BreakIterator *iter,
-        LocalPointer<BreakIterator> &ownedIter, UErrorCode &errorCode);
-
-#endif
-
-U_NAMESPACE_END
-
-#include "unicode/unistr.h"  // for UStringCaseMapper
-
-/*
- * Internal string casing functions implementing
- * ustring.h/ustrcase.cpp and UnicodeString case mapping functions.
- */
-
-struct UCaseMap : public icu::UMemory {
-    /** Implements most of ucasemap_open(). */
-    UCaseMap(const char *localeID, uint32_t opts, UErrorCode *pErrorCode);
-    ~UCaseMap();
-
-#if !UCONFIG_NO_BREAK_ITERATION
-    icu::BreakIterator *iter;  /* We adopt the iterator, so we own it. */
-#endif
-    char locale[32];
-    int32_t caseLocale;
-    uint32_t options;
-};
-
-#if UCONFIG_NO_BREAK_ITERATION
-#   define UCASEMAP_BREAK_ITERATOR_PARAM
-#   define UCASEMAP_BREAK_ITERATOR_UNUSED
-#   define UCASEMAP_BREAK_ITERATOR
-#   define UCASEMAP_BREAK_ITERATOR_NULL
-#else
-#   define UCASEMAP_BREAK_ITERATOR_PARAM icu::BreakIterator *iter,
-#   define UCASEMAP_BREAK_ITERATOR_UNUSED icu::BreakIterator *,
-#   define UCASEMAP_BREAK_ITERATOR iter,
-#   define UCASEMAP_BREAK_ITERATOR_NULL NULL,
-#endif
-
-U_CFUNC int32_t
-ustrcase_getCaseLocale(const char *locale);
-
-// TODO: swap src / dest if approved for new public api
-/** Implements UStringCaseMapper. */
-U_CFUNC int32_t U_CALLCONV
-ustrcase_internalToLower(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                         UChar *dest, int32_t destCapacity,
-                         const UChar *src, int32_t srcLength,
-                         icu::Edits *edits,
-                         UErrorCode &errorCode);
-
-/** Implements UStringCaseMapper. */
-U_CFUNC int32_t U_CALLCONV
-ustrcase_internalToUpper(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                         UChar *dest, int32_t destCapacity,
-                         const UChar *src, int32_t srcLength,
-                         icu::Edits *edits,
-                         UErrorCode &errorCode);
-
-#if !UCONFIG_NO_BREAK_ITERATION
-
-/** Implements UStringCaseMapper. */
-U_CFUNC int32_t U_CALLCONV
-ustrcase_internalToTitle(int32_t caseLocale, uint32_t options,
-                         icu::BreakIterator *iter,
-                         UChar *dest, int32_t destCapacity,
-                         const UChar *src, int32_t srcLength,
-                         icu::Edits *edits,
-                         UErrorCode &errorCode);
-
-#endif
-
-/** Implements UStringCaseMapper. */
-U_CFUNC int32_t U_CALLCONV
-ustrcase_internalFold(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                      UChar *dest, int32_t destCapacity,
-                      const UChar *src, int32_t srcLength,
-                      icu::Edits *edits,
-                      UErrorCode &errorCode);
-
-/**
- * Common string case mapping implementation for ucasemap_toXyz() and UnicodeString::toXyz().
- * Implements argument checking.
- */
-U_CFUNC int32_t
-ustrcase_map(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-             UChar *dest, int32_t destCapacity,
-             const UChar *src, int32_t srcLength,
-             UStringCaseMapper *stringCaseMapper,
-             icu::Edits *edits,
-             UErrorCode &errorCode);
-
-/**
- * Common string case mapping implementation for old-fashioned u_strToXyz() functions
- * that allow the source string to overlap the destination buffer.
- * Implements argument checking and internally works with an intermediate buffer if necessary.
- */
-U_CFUNC int32_t
-ustrcase_mapWithOverlap(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                        UChar *dest, int32_t destCapacity,
-                        const UChar *src, int32_t srcLength,
-                        UStringCaseMapper *stringCaseMapper,
-                        UErrorCode &errorCode);
-
-/**
- * UTF-8 string case mapping function type, used by ucasemap_mapUTF8().
- * UTF-8 version of UStringCaseMapper.
- * All error checking must be done.
- * The UCaseMap must be fully initialized, with locale and/or iter set as needed.
- */
-typedef void U_CALLCONV
-UTF8CaseMapper(int32_t caseLocale, uint32_t options,
-#if !UCONFIG_NO_BREAK_ITERATION
-               icu::BreakIterator *iter,
-#endif
-               const uint8_t *src, int32_t srcLength,
-               icu::ByteSink &sink, icu::Edits *edits,
-               UErrorCode &errorCode);
-
-#if !UCONFIG_NO_BREAK_ITERATION
-
-/** Implements UTF8CaseMapper. */
-U_CFUNC void U_CALLCONV
-ucasemap_internalUTF8ToTitle(int32_t caseLocale, uint32_t options,
-        icu::BreakIterator *iter,
-        const uint8_t *src, int32_t srcLength,
-        icu::ByteSink &sink, icu::Edits *edits,
-        UErrorCode &errorCode);
-
-#endif
-
-void
-ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                 const char *src, int32_t srcLength,
-                 UTF8CaseMapper *stringCaseMapper,
-                 icu::ByteSink &sink, icu::Edits *edits,
-                 UErrorCode &errorCode);
-
-/**
- * Implements argument checking and buffer handling
- * for UTF-8 string case mapping as a common function.
- */
-int32_t
-ucasemap_mapUTF8(int32_t caseLocale, uint32_t options, UCASEMAP_BREAK_ITERATOR_PARAM
-                 char *dest, int32_t destCapacity,
-                 const char *src, int32_t srcLength,
-                 UTF8CaseMapper *stringCaseMapper,
-                 icu::Edits *edits,
-                 UErrorCode &errorCode);
-
-U_NAMESPACE_BEGIN
-namespace GreekUpper {
-
-// Data bits.
-static const uint32_t UPPER_MASK = 0x3ff;
-static const uint32_t HAS_VOWEL = 0x1000;
-static const uint32_t HAS_YPOGEGRAMMENI = 0x2000;
-static const uint32_t HAS_ACCENT = 0x4000;
-static const uint32_t HAS_DIALYTIKA = 0x8000;
-// Further bits during data building and processing, not stored in the data map.
-static const uint32_t HAS_COMBINING_DIALYTIKA = 0x10000;
-static const uint32_t HAS_OTHER_GREEK_DIACRITIC = 0x20000;
-
-static const uint32_t HAS_VOWEL_AND_ACCENT = HAS_VOWEL | HAS_ACCENT;
-static const uint32_t HAS_VOWEL_AND_ACCENT_AND_DIALYTIKA =
-        HAS_VOWEL_AND_ACCENT | HAS_DIALYTIKA;
-static const uint32_t HAS_EITHER_DIALYTIKA = HAS_DIALYTIKA | HAS_COMBINING_DIALYTIKA;
-
-// State bits.
-static const uint32_t AFTER_CASED = 1;
-static const uint32_t AFTER_VOWEL_WITH_ACCENT = 2;
-
-uint32_t getLetterData(UChar32 c);
-
-/**
- * Returns a non-zero value for each of the Greek combining diacritics
- * listed in The Unicode Standard, version 8, chapter 7.2 Greek,
- * plus some perispomeni look-alikes.
- */
-uint32_t getDiacriticData(UChar32 c);
-
-}  // namespace GreekUpper
-U_NAMESPACE_END
-
-#endif  // __cplusplus
-
-#endif  // __UCASEMAP_IMP_H__