remove rendundant line

feed.php

@@ -20,7 +20,6 @@ $opt = rss_parseOptions();
 
 // the feed is dynamic - we need a cache for each combo
 // (but most people just use the default feed so it's still effective)
-$cache = getCacheName(join('', array_values($opt)).$_SERVER['REMOTE_USER'], '.feed');
 $key   = join('', array_values($opt)).$_SERVER['REMOTE_USER'].$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'];
 $cache = new cache($key, '.feed');