Remove Andrew Yu copyright, with permission from author.

src/backend/port/dynloader/ultrix4.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/port/dynloader/ultrix4.h,v 1.17 2007/01/05 22:19:35 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/port/dynloader/ultrix4.h,v 1.18 2007/03/26 21:51:15 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -16,21 +16,6 @@
  *
  *	dl.h
  *		header file for the Dynamic Loader Library
- *
- *
- *	Copyright (c) 1993 Andrew K. Yu, University of California at Berkeley
- *	All rights reserved.
- *
- *	Permission to use, copy, modify, and distribute this software and its
- *	documentation for educational, research, and non-profit purposes and
- *	without fee is hereby granted, provided that the above copyright
- *	notice appear in all copies and that both that copyright notice and
- *	this permission notice appear in supporting documentation. Permission
- *	to incorporate this software into commercial products can be obtained
- *	from the author. The University of California and the author make
- *	no representations about the suitability of this software for any
- *	purpose. It is provided "as is" without express or implied warranty.
- *
  */
 #ifndef _DL_HEADER_
 #define _DL_HEADER_