style(stream): remove unneeded function declarations in stream (#71)

Shdict workaround is no longer needed as they have been upstreamed to OpenResty alrerady:
openresty/lua-nginx-module@653d6a3

Author: chronolaw

stream/src/ngx_stream_lua_kong_module.h

@@ -24,77 +24,8 @@ typedef struct {
 ngx_flag_t
 ngx_stream_lua_kong_get_proxy_ssl_disable(ngx_stream_session_t *s);
 
-
-// macOS with M1 fixes, see: https://github.com/LuaJIT/LuaJIT/issues/205
-
-int ngx_stream_lua_ffi_shdict_get(ngx_shm_zone_t *zone, const unsigned char *key,
-    size_t key_len, int *value_type, unsigned char **str_value_buf,
-    size_t *str_value_len, double *num_value, int *user_flags,
-    int get_stale, int *is_stale, char **errmsg);
-
-typedef struct {
-    ngx_shm_zone_t *zone;
-    const unsigned char *key;
-    size_t key_len;
-    int *value_type;
-    unsigned char **str_value_buf;
-    size_t *str_value_len;
-    double *num_value;
-    int *user_flags;
-    int get_stale;
-    int *is_stale;
-    char **errmsg;
-} ngx_shdict_get_t;
-
-int ngx_stream_lua_ffi_shdict_get_m1(ngx_shdict_get_t *s);
-
-
-int ngx_stream_lua_ffi_shdict_store(ngx_shm_zone_t *zone, int op,
-    const unsigned char *key, size_t key_len, int value_type,
-    const unsigned char *str_value_buf, size_t str_value_len,
-    double num_value, long exptime, int user_flags, char **errmsg,
-    int *forcible);
-
-typedef struct {
-    ngx_shm_zone_t *zone;
-    int op;
-    const unsigned char *key;
-    size_t key_len;
-    int value_type;
-    const unsigned char *str_value_buf;
-    size_t str_value_len;
-    double num_value;
-    long exptime;
-    int user_flags;
-    char **errmsg;
-    int *forcible;
-} ngx_shdict_store_t;
-
-int ngx_stream_lua_ffi_shdict_store_m1(ngx_shdict_store_t *s);
-
-
-int ngx_stream_lua_ffi_shdict_incr(ngx_shm_zone_t *zone, const unsigned char *key,
-    size_t key_len, double *num_value, char **errmsg, int has_init,
-    double init, long init_ttl, int *forcible);
-
-typedef struct {
-    ngx_shm_zone_t *zone;
-    const unsigned char *key;
-    size_t key_len;
-    double *num_value;
-    char **errmsg;
-    int has_init;
-    double init;
-    long init_ttl;
-    int *forcible;
-} ngx_shdict_incr_t;
-
-int ngx_stream_lua_ffi_shdict_incr_m1(ngx_shdict_incr_t *s);
-
-// macOS with M1 fixes end
-
 void
-ngx_stream_lua_kong_set_upstream_ssl(ngx_stream_session_t *s, 
+ngx_stream_lua_kong_set_upstream_ssl(ngx_stream_session_t *s,
     ngx_connection_t *c);
 
 ngx_flag_t