Remove unnecessary patch. No change to the build.

from Brad (maintainer)

www/lighttpd/patches/patch-configure_ac

@@ -1,22 +0,0 @@
-$OpenBSD: patch-configure_ac,v 1.2 2010/08/18 11:16:55 sthen Exp $
---- configure.ac.orig	Sat Aug  7 05:31:29 2010
-+++ configure.ac	Sun Aug  8 22:18:59 2010
-@@ -585,7 +585,17 @@ AM_CONDITIONAL(CHECK_WITH_FASTCGI, test "x$fastcgi_fou
- 
- dnl check for extra compiler options (warning options)
- if test "${GCC}" = "yes"; then
--    CFLAGS="${CFLAGS} -Wall -W -Wshadow -pedantic -std=gnu99"
-+    CFLAGS="${CFLAGS} -Wall -W -Wshadow -pedantic"
-+
-+    # Use std=gnu99 if we have new enough GCC
-+    old_cflags=${CFLAGS}
-+    CFLAGS="-std=gnu99"
-+    AC_TRY_COMPILE([
-+    ],, [
-+      CFLAGS="${CFLAGS} $old_cflags"
-+    ], [
-+      CFLAGS="${old_cflags}"
-+    ])
- fi
- 
- AC_ARG_ENABLE(extra-warnings,