sys-cluster/glusterfs: Oops, 3.13.0 does not have --with-libtirpc

This flag is not yet released. It did no harm but let's not make this
situation any more confusing.

Package-Manager: Portage-2.3.17, Repoman-2.3.6

sys-cluster/glusterfs/glusterfs-3.13.0.ebuild

@@ -118,7 +118,6 @@ src_configure() {
 		$(use_enable tiering) \
 		$(use_enable xml xml-output) \
 		$(use_with libtirpc ipv6-default) \
-		$(use_with libtirpc) \
 		--with-tmpfilesdir="${EPREFIX}"/etc/tmpfiles.d \
 		--docdir="${EPREFIX}"/usr/share/doc/${PF} \
 		--localstatedir="${EPREFIX}"/var