Remove deprecated option session.requestcache from config-template.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3204 44740490-163a-0410-bde0-09ae8108e29a

config-templates/config.php

@@ -182,7 +182,6 @@ $config = array (
 	 * cookies both at the SP and the IdP exceeds this duration.
 	 */
 	'session.duration'		=>  8 * (60*60), // 8 hours.
-	'session.requestcache'	=>  4 * (60*60), // 4 hours
 
 	/*
 	 * Sets the duration, in seconds, data should be stored in the datastore. As the datastore is used for