Remove duplicated headers from modules/

Source/modules/webdatabase/sqlite/SQLiteDatabase.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.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 14 matching lines @@
  */
 
 #include "config.h"
 #include "modules/webdatabase/sqlite/SQLiteDatabase.h"
 
 #include <sqlite3.h>
 #include "platform/Logging.h"
 #include "modules/webdatabase/sqlite/SQLiteFileSystem.h"
 #include "modules/webdatabase/sqlite/SQLiteStatement.h"
 #include "modules/webdatabase/DatabaseAuthorizer.h"
-#include "wtf/text/CString.h"
-#include "wtf/text/WTFString.h"
-#include "wtf/Threading.h"
 
 namespace WebCore {
 
 const int SQLResultDone = SQLITE_DONE;
 const int SQLResultError = SQLITE_ERROR;
 const int SQLResultOk = SQLITE_OK;
 const int SQLResultRow = SQLITE_ROW;
 const int SQLResultSchema = SQLITE_SCHEMA;
 const int SQLResultFull = SQLITE_FULL;
 const int SQLResultInterrupt = SQLITE_INTERRUPT;
@@ skipping 442 matching lines @@
     default:
         if (!executeCommand("PRAGMA auto_vacuum = 2"))
             return false;
         runVacuumCommand();
         error = lastError();
         return (error == SQLITE_OK);
     }
 }
 
 } // namespace WebCore