remove stale patch

sysutils/libnotify/patches/patch-libnotify_notification.c

@@ -1,16 +0,0 @@
-$NetBSD: patch-libnotify_notification.c,v 1.1 2011/04/25 08:55:28 adam Exp $
-
-Fix building with GDK with Quartz (Mac OS X) backend.
-
---- libnotify/notification.c.orig	2011-04-25 08:35:15.000000000 +0000
-+++ libnotify/notification.c
-@@ -31,7 +31,9 @@
- # define HAVE_STATUS_ICON
- # include <gtk/gtkstatusicon.h>
- #endif
-+#ifndef GDK_WINDOWING_QUARTZ
- #include <gdk/gdkx.h>
-+#endif
- 
- #define CHECK_DBUS_VERSION(major, minor) \
- 	(DBUS_MAJOR_VER > (major) || \