Remove dead reference to a password

The line in question is dead code, and therefore has no effect
(it either dies or gets overwritten short time later).  Removing
it makes the code cleaner and counters the tendency for someone
to think we might be using a hard coded password in this file.

xCAT-server/lib/xcat/plugins/esx.pm

@@ -2476,7 +2476,7 @@ sub clone_vms_from_master {
 sub make_customization_spec {
 	my $node = shift;
     my %args = @_;
-	my $password="Passw0rd";
+	my $password;
 	my $wintimezone;
 	#map of number to strings can be found at 
 	#http://osman-shener-en.blogspot.com/2008/02/unattendedtxt-time-zone-index.html