Remove the COMPILER(RVCT) guard.

Source/wtf/UnusedParam.h

 /*
  *  Copyright (C) 2006 Apple Computer, Inc.
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Library General Public
  *  License as published by the Free Software Foundation; either
  *  version 2 of the License, or (at your option) any later version.
  *
  *  This library is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  *  Library General Public License for more details.
  *
  *  You should have received a copy of the GNU Library General Public License
  *  along with this library; see the file COPYING.LIB.  If not, write to
  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  *  Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef WTF_UnusedParam_h
 #define WTF_UnusedParam_h
 
 #include <wtf/Platform.h>
 
-#if COMPILER(INTEL) && !OS(WINDOWS) || COMPILER(RVCT)
+#if COMPILER(INTEL) && !OS(WINDOWS)
 template<typename T>
 inline void unusedParam(T& x) { (void)x; }
 #define UNUSED_PARAM(variable) unusedParam(variable)
 #else
 #define UNUSED_PARAM(variable) (void)variable
 #endif
 
 /* This is to keep the compiler from complaining when for local labels are
    declared but not referenced. For example, this can happen with code that
    works with auto-generated code.
 */
 #if COMPILER(MSVC)
 #define UNUSED_LABEL(label) if (false) goto label
 #else
 #define UNUSED_LABEL(label) UNUSED_PARAM(&& label)
 #endif
 
 #endif /* WTF_UnusedParam_h */