Remove duplicated headers from platform/

Source/platform/text/TextBoundaries.cpp

 /*
  * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
  * Copyright (C) 2009 Dominik Röttsches <dominik.roettsches@access-company.com>
  *
  * 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
@@ skipping 11 matching lines @@
  * 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.
  */
 
 #include "config.h"
 #include "platform/text/TextBoundaries.h"
 
 #include "platform/text/TextBreakIterator.h"
 #include "wtf/text/StringImpl.h"
-#include "wtf/unicode/Unicode.h"
 
 using namespace WTF;
 using namespace Unicode;
 
 namespace WebCore {
 
 int endOfFirstWordBoundaryContext(const UChar* characters, int length)
 {
     for (int i = 0; i < length; ) {
         int first = i;
@@ skipping 52 matching lines @@
 {
     TextBreakIterator* it = wordBreakIterator(chars, len);
     *end = it->following(position);
     if (*end < 0)
         *end = it->last();
     *start = it->previous();
 }
 
 
 } // namespace WebCore