handle PATH in the same way as in monthly(8) and weekly(8),

i.e. rely on the PATH set up in the root crontab(5)
in case /usr/local/bin is needed, daily.local is a logical place to append it
suggested by ajacoutot@; "i like this" okan@; feedback jmc@ deraadt@;
"i don't strongly object" sthen@

src/etc/daily

@@ -1,11 +1,9 @@
 #
-#	$OpenBSD: daily,v 1.61 2009/05/17 00:25:34 schwarze Exp $
+#	$OpenBSD: daily,v 1.62 2009/05/18 20:07:35 schwarze Exp $
 #	From: @(#)daily	8.2 (Berkeley) 1/25/94
 #
 umask 022
 
-PATH=/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin
-
 PARTOUT=/var/log/daily.part
 MAINOUT=/var/log/daily.out
 install -o 0 -g 0 -m 600    /dev/null $PARTOUT