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diff --git a/include/inn/tst.h b/include/inn/tst.h
deleted file mode 100644
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--- a/include/inn/tst.h
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@@ -1,88 +0,0 @@
-/*  $Id: tst.h 6083 2002-12-27 07:24:36Z rra $
-**
-**  Ternary search trie implementation.
-**
-**  This implementation is based on the implementation by Peter A. Friend
-**  (version 1.3), but has been assimilated into INN and modified to use INN
-**  formatting conventions.
-**
-**  Copyright (c) 2002, Peter A. Friend 
-**  All rights reserved. 
-**
-**  Redistribution and use in source and binary forms, with or without
-**  modification, are permitted provided that the following conditions are
-**  met:
-**
-**  Redistributions of source code must retain the above copyright notice,
-**  this list of conditions and the following disclaimer.
-**
-**  Redistributions in binary form must reproduce the above copyright notice,
-**  this list of conditions and the following disclaimer in the documentation
-**  and/or other materials provided with the distribution.
-**
-**  Neither the name of Peter A. Friend nor the names of its contributors may
-**  be used to endorse or promote products derived from this software without
-**  specific prior written permission.
-**
-**  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-**  IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
-**  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
-**  PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
-**  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-**  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-**  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-**  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-**  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-**  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-**  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifndef INN_TST_H
-#define INN_TST_H 1
-
-#include <inn/defines.h>
-
-BEGIN_DECLS
-
-/* Constants used for return values and options. */
-enum tst_constants {
-    TST_OK,
-    TST_NULL_KEY,
-    TST_NULL_DATA,
-    TST_DUPLICATE_KEY,
-    TST_REPLACE
-};
-
-/* Opaque data type returned by and used by ternary search trie functions. */
-struct tst;
-
-/* Allocate a new ternary search trie.  width is the number of nodes allocated
-   at a time and should be chosen carefully.  One node is required for every
-   character in the tree.  If you choose a value that is too small, your
-   application will spend too much time calling malloc and your node space
-   will be too spread out.  Too large a value is just a waste of space. */
-struct tst *tst_init(int width);
-
-/* Insert a value into the tree.  If the key already exists in the tree,
-   option determiens the behavior.  If set to TST_REPLACE, the data for that
-   key is replaced with the new data value and the old value is returned in
-   exist_ptr.  Otherwise, TST_DUPLICATE_KEY is returned.  If key is zero
-   length, TST_NULL_KEY is returned.  If data is NULL, TST_NULL_DATA is
-   returned.  On success, TST_OK is returned.
-
-   The data argument may not be NULL.  For a simple existence tree, use the
-   struct tst pointer as the data. */
-int tst_insert(struct tst *, const unsigned char *key, void *data, int option,
-               void **exist_ptr);
-
-/* Search for a key and return the associated data, or NULL if not found. */
-void *tst_search(struct tst *, const unsigned char *key);
-
-/* Delete the given key out of the trie, returning the data that it pointed
-   to.  If the key was not found, returns NULL. */
-void *tst_delete(struct tst *, const unsigned char *key);
-
-/* Free the given ternary search trie and all resources it uses. */
-void tst_cleanup(struct tst *);
-
-#endif /* !INN_TST_H */