pkgbase: Remove vital flags for FreeBSD-utilities

Per the pkg-descr: "Non-vital programs and librairies"

Reviewed by:	emaste
MFC after:      2 weeks
Sponsored by:   Beckhoff Automation GmbH & Co. KG
Differential Revision:	https://reviews.freebsd.org/D33436

release/packages/generate-ucl.sh

@@ -44,7 +44,6 @@ main() {
 			;;
 		utilities)
 			uclfile="${uclfile}"
-			vital="true"
 			;;
 		runtime)
 			outname="runtime"