Remove unused include file for long-dead flavors of locking.

src/include/storage/multilev.h

-/*-------------------------------------------------------------------------
- *
- * multilev.h
- *	  multi level lock table consts/defs for single.c and multi.c and their
- *	  clients
- *
- *
- * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * $Id: multilev.h,v 1.18 2001/01/24 19:43:28 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-#ifndef MULTILEV_H
-#define MULTILEV_H
-
-#include "storage/lmgr.h"
-
-#ifdef LowLevelLocking
-
-/* DML locks */
-#define RowShareLock			1		/* SELECT FOR UPDATE */
-#define RowExclusiveLock		2		/* INSERT, UPDATE, DELETE */
-#define ShareLock				3
-#define ShareRowExclusiveLock	4
-#define ExclusiveLock			5
-
-/* DDL locks */
-#define ObjShareLock			6
-#define ObjExclusiveLock		7
-
-/* Special locks */
-#define ExtendLock				8
-
-#else
-
-#define READ_LOCK		2
-#define WRITE_LOCK		1
-
-/* any time a small granularity READ/WRITE lock is set.
- * Higher granularity READ_INTENT/WRITE_INTENT locks must
- * also be set.  A read intent lock is has value READ+INTENT.
- * in this implementation.
- */
-#define NO_LOCK			0
-#define INTENT			2
-#define READ_INTENT		(READ_LOCK+INTENT)
-#define WRITE_INTENT	(WRITE_LOCK+INTENT)
-
-#define EXTEND_LOCK		5
-
-#endif	 /* !LowLevelLocking */
-
-#define SHORT_TERM		1
-#define LONG_TERM		2
-#define UNLOCK			0
-
-#define N_LEVELS 3
-#define RELN_LEVEL 0
-#define PAGE_LEVEL 1
-#define TUPLE_LEVEL 2
-typedef int PG_LOCK_LEVEL;
-
-/* multi.c */
-
-extern LOCKMETHOD MultiTableId;
-
-#ifdef NOT_USED
-extern LOCKMETHOD ShortTermTableId;
-
-#endif
-
-/*
- * function prototypes
- */
-extern LOCKMETHOD InitMultiLevelLocks(void);
-extern bool MultiLockReln(LockInfo lockinfo, LOCKMODE lockmode);
-extern bool MultiLockPage(LockInfo lockinfo, ItemPointer tidPtr, LOCKMODE lockmode);
-extern bool MultiReleaseReln(LockInfo lockinfo, LOCKMODE lockmode);
-
-#endif	 /* MULTILEV_H */