--- a/src/http/v3/ngx_http_v3.c
+++ b/src/http/v3/ngx_http_v3.c
@@ -94,83 +94,3 @@ ngx_http_v3_encode_prefix_int(u_char *p,
 
     return (uintptr_t) p;
 }
-
-
-uint64_t
-ngx_http_v3_decode_varlen_int(u_char *p)
-{
-    uint64_t    value;
-    ngx_uint_t  len;
-
-    len = *p >> 6;
-    value = *p & 0x3f;
-
-    while (len--) {
-        value = (value << 8) + *p++;
-    }
-
-    return value;
-}
-
-
-int64_t
-ngx_http_v3_decode_prefix_int(u_char **src, size_t len, ngx_uint_t prefix)
-{
-    u_char   *p;
-    int64_t   value, thresh;
-
-    if (len == 0) {
-        return NGX_ERROR;
-    }
-
-    p = *src;
-
-    thresh = (1 << prefix) - 1;
-    value = *p++ & thresh;
-
-    if (value != thresh) {
-        *src = p;
-        return value;
-    }
-
-    value = 0;
-
-    /* XXX handle overflows */
-
-    while (--len) {
-        value = (value << 7) + (*p & 0x7f);
-        if ((*p++ & 0x80) == 0) {
-            *src = p;
-            return value + thresh;
-        }
-    }
-
-    return NGX_ERROR;
-}
-
-
-ngx_int_t
-ngx_http_v3_decode_huffman(ngx_connection_t *c, ngx_str_t *s)
-{
-    u_char  state, *p, *data;
-
-    state = 0;
-
-    p = ngx_pnalloc(c->pool, s->len * 8 / 5);
-    if (p == NULL) {
-        return NGX_ERROR;
-    }
-
-    data = p;
-
-    if (ngx_http_v2_huff_decode(&state, s->data, s->len, &p, 1, c->log)
-        != NGX_OK)
-    {
-        return NGX_ERROR;
-    }
-
-    s->len = p - data;
-    s->data = data;
-
-    return NGX_OK;
-}