Remove unused variable.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@791 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_acceptor.c

@@ -422,7 +422,6 @@ accept_f(int fd)
 static void *
 vca_main(void *arg)
 {
-	unsigned u;
 	struct kevent ke;
 	int i;
 	struct sess *sp;