remove unnecessary patch

lang/gcc/4.6/patches/patch-gcc_config_openbsd-libpthread_h

@@ -1,33 +0,0 @@
-$OpenBSD: patch-gcc_config_openbsd-libpthread_h,v 1.1.1.1 2011/11/14 13:00:57 pascal Exp $
---- gcc/config/openbsd-libpthread.h.orig	Sun Sep 27 15:20:23 2009
-+++ gcc/config/openbsd-libpthread.h	Sat Nov 12 14:22:54 2011
-@@ -2,6 +2,29 @@
-    specified on the command line. */
- /*   Copyright (C) 2004 Free Software Foundation, Inc.
- 
-+This file is part of GNU CC.
-+
-+GNU CC is free software; you can redistribute it and/or modify
-+it under the terms of the GNU General Public License as published by
-+the Free Software Foundation; either version 2, or (at your option)
-+any later version.
-+
-+GNU CC is distributed in the hope that it will be useful,
-+but WITHOUT ANY WARRANTY; without even the implied warranty of
-+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+GNU General Public License for more details.
-+
-+You should have received a copy of the GNU General Public License
-+along with GNU CC; see the file COPYING.  If not, write to
-+the Free Software Foundation, 59 Temple Place - Suite 330,
-+Boston, MA 02111-1307, USA.  */
-+
-+#define OBSD_LIB_SPEC "%{!shared:%{pthread:-lpthread} -lc}"
-+
-+/* LIB_SPEC appropriate for OpenBSD.  Include -lpthread if -pthread is
-+   specified on the command line. */
-+/*   Copyright (C) 2004 Free Software Foundation, Inc.
-+
-    This file is part of GCC.
- 
-    GCC is free software; you can redistribute it and/or modify it