launch: drop unused helper
We no longer need this cleanup-helper. Drop it, so the CI will not
complain when run with -Werror.
@@ -91,8 +91,6 @@ static sd_bus *bus_close_unref(sd_bus *bus) {
return sd_bus_unref(bus);
}
-C_DEFINE_CLEANUP(sd_bus *, bus_close_unref);
-
static int service_compare(CRBTree *t, void *k, CRBNode *n) {
Service *service = c_container_of(n, Service, rb);
