Remove needless files

src/st.h

-/* This is a public domain general purpose hash table package written by Peter Moore @ UCB. */
-
-/* @(#) st.h 5.1 89/12/14 */
-
-#ifndef RUBY_ST_H
-#define RUBY_ST_H 1
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-#include <stdlib.h>
-#include <stdint.h>
-
-#ifndef CHAR_BIT
-# ifdef HAVE_LIMITS_H
-#  include <limits.h>
-# else
-#  define CHAR_BIT 8
-# endif
-#endif
-
-#ifndef ANYARGS
-# ifdef __cplusplus
-#   define ANYARGS ...
-# else
-#   define ANYARGS
-# endif
-#endif
-
-typedef uintptr_t st_data_t;
-typedef struct st_table st_table;
-
-typedef st_data_t st_index_t;
-typedef int st_compare_func(st_data_t, st_data_t);
-typedef st_index_t st_hash_func(st_data_t);
-
-typedef struct st_table_entry st_table_entry;
-
-struct st_table_entry {
-    st_index_t hash;
-    st_data_t key;
-    st_data_t record;
-    st_table_entry *next;
-    st_table_entry *fore, *back;
-};
-
-struct st_hash_type {
-    int (*compare)(ANYARGS /*st_data_t, st_data_t*/); /* st_compare_func* */
-    st_index_t (*hash)(ANYARGS /*st_data_t*/);        /* st_hash_func* */
-};
-
-struct st_table {
-    const struct st_hash_type *type;
-    int num_bins;
-    int num_entries;
-    struct st_table_entry **bins;
-    struct st_table_entry *head, *tail;
-};
-
-#define st_is_member(table,key) st_lookup(table,key,(st_data_t *)0)
-
-enum st_retval {ST_CONTINUE, ST_STOP, ST_DELETE, ST_CHECK};
-
-st_table *st_init_table(const struct st_hash_type *);
-st_table *st_init_table_with_size(const struct st_hash_type *, int);
-st_table *st_init_numtable(void);
-st_table *st_init_numtable_with_size(int);
-st_table *st_init_strtable(void);
-st_table *st_init_strtable_with_size(int);
-st_table *st_init_strcasetable(void);
-st_table *st_init_strcasetable_with_size(st_index_t);
-int st_delete(st_table *, st_data_t *, st_data_t *);
-int st_delete_safe(st_table *, st_data_t *, st_data_t *, st_data_t);
-int st_insert(st_table *, st_data_t, st_data_t);
-int st_lookup(st_table *, st_data_t, st_data_t *);
-int st_foreach(st_table *, enum st_retval (*)(ANYARGS), st_data_t);
-void st_add_direct(st_table *, st_data_t, st_data_t);
-void st_free_table(st_table *);
-void st_cleanup_safe(st_table *, st_data_t);
-st_table *st_copy(st_table *);
-int st_strcasecmp(const char *s1, const char *s2);
-int st_strncasecmp(const char *s1, const char *s2, size_t n);
-#define STRCASECMP(s1, s2) (st_strcasecmp(s1, s2))
-#define STRNCASECMP(s1, s2, n) (st_strncasecmp(s1, s2, n))
-
-#define ST_NUMCMP       ((int (*)()) 0)
-#define ST_NUMHASH      ((int (*)()) -2)
-
-#define st_numcmp       ST_NUMCMP
-#define st_numhash      ST_NUMHASH
-
-int st_strhash();
-
-#if defined(__cplusplus)
-}  /* extern "C" { */
-#endif
-
-#endif /* ST_INCLUDED */