remove deprecated file, already deprecated in 2.1

[[Imported from SVN: r6544]]

dune/common/Makefile.am

@@ -80,7 +80,6 @@ commoninclude_HEADERS = 			\
 	tuples.hh				\
 	tupleutility.hh                         \
 	typetraits.hh				\
-	utility.hh                              \
 	version.hh
 
 if EXPRESSIONTEMPLATES

dune/common/utility.hh

-// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
-// vi: set et ts=4 sw=2 sts=2:
-#ifndef DUNE_UTILITY_HH
-#define DUNE_UTILITY_HH
-
-/** \file
-    \brief For backward compatibility: include tupleutility.hh and issue a warning
- */
-
-#warning This file is deprecated.  Please use tupleutility.hh instead!
-#include <dune/common/tupleutility.hh>
-
-#endif