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diff --git a/ghc/rts/gmp/mpz/realloc.c b/ghc/rts/gmp/mpz/realloc.c
deleted file mode 100644
index 0b9e447..0000000
--- a/ghc/rts/gmp/mpz/realloc.c
+++ /dev/null
@@ -1,52 +0,0 @@
-/* _mpz_realloc -- make the mpz_t have NEW_SIZE digits allocated.
-
-Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
-
-This file is part of the GNU MP Library.
-
-The GNU MP Library is free software; you can redistribute it and/or modify
-it under the terms of the GNU Lesser General Public License as published by
-the Free Software Foundation; either version 2.1 of the License, or (at your
-option) any later version.
-
-The GNU MP 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 Lesser General Public
-License for more details.
-
-You should have received a copy of the GNU Lesser General Public License
-along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
-the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-MA 02111-1307, USA. */
-
-#include "gmp.h"
-#include "gmp-impl.h"
-
-void *
-#if __STDC__
-_mpz_realloc (mpz_ptr m, mp_size_t new_size)
-#else
-_mpz_realloc (m, new_size)
-     mpz_ptr m;
-     mp_size_t new_size;
-#endif
-{
-  /* Never allocate zero space. */
-  if (new_size == 0)
-    new_size = 1;
-
-  m->_mp_d = (mp_ptr) (*_mp_reallocate_func) (m->_mp_d,
-					      m->_mp_alloc * BYTES_PER_MP_LIMB,
-					      new_size * BYTES_PER_MP_LIMB);
-  m->_mp_alloc = new_size;
-
-#if 0
-  /* This might break some code that reads the size field after
-     reallocation, in the case the reallocated destination and a
-     source argument are identical.  */
-  if (ABS (m->_mp_size) > new_size)
-    m->_mp_size = 0;
-#endif
-
-  return (void *) m->_mp_d;
-}