Whitespace cleanup

* remove trailing whitespace
* remove empty lines at the end of files

plugins/mailman/mailman-queue-check

@@ -56,5 +56,5 @@ echo "news.value ${array[4]}"
 echo "out.value ${array[5]}"
 echo "retry.value ${array[6]}"
 exit 0
-                                              
+
 

plugins/mailman/mailman_subscribers

@@ -61,7 +61,7 @@ if ($ARGV[0] and $ARGV[0] eq "config" ){
     print "graph_category mailinglist\n";
     print "graph_total Total\n";
     print 'graph_info Plugin available at <a href="http://rodolphe.quiedeville.org/hack/munin/mailman/">http://rodolphe.quiedeville.org/hack/munin/mailman/</a>'."\n";
-  
+
     my $num =0;
     while (($list,$desc) = each(%lists)) {
 	$label=$list;