Remove dedicated TextCodecUTF16

Source/wtf/text/TextCodecUTF16.h

Index: Source/wtf/text/TextCodecUTF16.h
diff --git a/Source/wtf/text/TextCodecUTF16.h b/Source/wtf/text/TextCodecUTF16.h
deleted file mode 100644
index d548f275db30cd06d382df29f9d2c360d8c41bda..0000000000000000000000000000000000000000
--- a/Source/wtf/text/TextCodecUTF16.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2004, 2006 Apple Computer, Inc.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. 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 with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef TextCodecUTF16_h
-#define TextCodecUTF16_h
-
-#include "wtf/text/TextCodec.h"
-
-namespace WTF {
-
-    class TextCodecUTF16 final : public TextCodec {
-    public:
-        static void registerEncodingNames(EncodingNameRegistrar);
-        static void registerCodecs(TextCodecRegistrar);
-
-        TextCodecUTF16(bool littleEndian) : m_littleEndian(littleEndian), m_haveBufferedByte(false) { }
-
-        virtual String decode(const char*, size_t length, FlushBehavior, bool stopOnError, bool& sawError) override;
-        virtual CString encode(const UChar*, size_t length, UnencodableHandling) override;
-        virtual CString encode(const LChar*, size_t length, UnencodableHandling) override;
-
-    private:
-        bool m_littleEndian;
-        bool m_haveBufferedByte;
-        unsigned char m_bufferedByte;
-    };
-
-} // namespace WTF
-
-#endif // TextCodecUTF16_h