[core] removed unused file

include/nbuf.h

-/*
- * Copyright (C) 2010 Mail.RU
- * Copyright (C) 2010 Yuriy Vostrikov
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY AUTHOR 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 AUTHOR 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 TARANTOOL_NBUF_H
-#define TARANTOOL_NBUF_H
-
-#include <stdint.h>
-
-#include <palloc.h>
-#include <tbuf.h>
-
-struct nbuf;
-struct nbuf *nbuf_alloc(struct palloc_pool *pool, uint32_t owner, uint32_t initial_size);
-void nbuf_prepend_tbuf(struct nbuf *buf, struct tbuf *t);
-void *nbuf_promise(struct nbuf *buf, uint32_t size);
-void nbuf_confirm(struct nbuf *buf, uint32_t size);
-void *nbuf_request(struct nbuf *buf, uint32_t size);
-
-#endif