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diff --git a/core/library/structures/string_hasher.cpp b/core/library/structures/string_hasher.cpp
deleted file mode 100644
index 0762e794..00000000
--- a/core/library/structures/string_hasher.cpp
+++ /dev/null
@@ -1,87 +0,0 @@
-/*****************************************************************************\
-*                                                                             *
-*  Name   : string_hasher                                                     *
-*  Author : Chris Koeritz                                                     *
-*                                                                             *
-*******************************************************************************
-* Copyright (c) 2001-$now By Author.  This program is free software; you can  *
-* redistribute it and/or modify it under the terms of the GNU General Public  *
-* License as published by the Free Software Foundation; either version 2 of   *
-* the License or (at your option) any later version.  This is online at:      *
-*     http://www.fsf.org/copyleft/gpl.html                                    *
-* Please send any updates to: fred@gruntose.com                               *
-\*****************************************************************************/
-
-#include "string_hasher.h"
-
-#include <basis/functions.h>
-#include <basis/astring.h>
-
-using namespace basis;
-
-namespace structures {
-
-const int MAX_STRING_CHARS_USED = 3;
-  // we use this many characters from the string in question (if they
-  // exist) at each end of the string.
-
-//////////////
-
-hashing_algorithm *string_hasher::clone() const
-{ return new string_hasher; }
-
-basis::un_int string_hasher::hash(const void *key_data, int key_length_in) const
-{
-  if (!key_data) return 0;  // error!
-  if (key_length_in <= 1) return 0;  // ditto!
-
-  abyte *our_key = (abyte *)key_data;
-  abyte hashed[4] = { 0, 0, 0, 0 };
-
-  int key_length = minimum(key_length_in - 1, MAX_STRING_CHARS_USED);
-
-  int fill_posn = 0;
-  // add the characters from the beginning of the string.
-  for (int i = 0; i < key_length; i++) {
-    // add to the primary area.
-    hashed[fill_posn] = hashed[fill_posn] + our_key[i];
-    fill_posn++;
-    if (fill_posn >= 4) fill_posn = 0;
-    // add to the secondary area (the next in rotation after primary).
-    hashed[fill_posn] = hashed[fill_posn] + (our_key[i] / 4);
-  }
-  // add the characters from the end of the string.
-  for (int k = key_length_in - 2;
-      (k >= 0) && (k >= key_length_in - 1 - key_length); k--) {
-    // add to the primary area.
-    hashed[fill_posn] = hashed[fill_posn] + our_key[k];
-    fill_posn++;
-    if (fill_posn >= 4) fill_posn = 0;
-    // add to the secondary area (the next in rotation after primary).
-    hashed[fill_posn] = hashed[fill_posn] + (our_key[k] / 4);
-  }
-  
-  basis::un_int to_return = 0;
-  for (int j = 0; j < 4; j++) to_return = (to_return << 8) + hashed[j];
-  return to_return;
-}
-
-//////////////
-
-hashing_algorithm *astring_hasher::clone() const
-{ return new astring_hasher; }
-
-basis::un_int astring_hasher::hash(const void *key_data, int key_length_in) const
-{
-  if (!key_data) return 0;  // error.
-  const astring *real_key = (const astring *)key_data;
-  if (real_key->length() + 1 != key_length_in) {
-//    printf("differing key lengths, string len=%d, key len=%d\n",
-//        real_key->length() + 1, key_length_in);
-  }
-  return string_hasher().hash((const void *)real_key->observe(),
-      real_key->length() + 1);
-}
-
-} //namespace.
-