Remove duplicate header added in http://reviews.llvm.org/rL256927

[ldrumm]

Summary

rL256927 included a duplicate StreamString header file. This patch simply removes the duplicate.

[EwanCrawford]

Since you don't have permission i'll commit this for you

lldb/trunk/source/Core/StringList.cpp

 //===-- StringList.cpp ------------------------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "lldb/Core/StringList.h"
 
 #include "lldb/Core/StreamString.h"
 #include "lldb/Host/FileSpec.h"
 #include "lldb/Core/Log.h"
-#include "lldb/Core/StreamString.h"
 
 #include <string>
 
 using namespace lldb_private;
 
 StringList::StringList () :
     m_strings ()
 {