o) Unbreak compilation error on FreeBSD 5.2 (remove patch-ai)

svn path=/head/; revision=109887

math/grace/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	grace
 PORTVERSION=	5.1.14
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	math print
 #
 # You never know when and why it is moved to ../src/old/   :-)

math/grace/files/patch-ai

@@ -1,15 +0,0 @@
---- cmath.h.orig	Fri Dec 12 21:33:45 2003
-+++ cmath.h	Thu Jan 22 22:22:45 2004
-@@ -175,5 +175,12 @@
- #endif
- 
- #if !defined(HAVE_ISNAN_DECL) && !defined(HAVE_ISNAN_MACRO)
-+#ifdef __FreeBSD__
-+#  include <sys/param.h>
-+#  if __FreeBSD_version < 500100
-+extern int isnan ( double x );
-+#  endif
-+#endif
-+#else
- extern int isnan ( double x );
- #endif