ll_simplify_and_cluster.sql: increase LR cut threshold

gstlal-inspiral/share/ll_simplify_and_cluster.sql

@@ -205,7 +205,7 @@ WHERE
 			_cluster_info_a_.coinc_event_id == coinc_event.coinc_event_id
 	);
 --
--- delete all events with LR < 3
+-- delete all events with LR < 4
 --
 DELETE FROM
 	coinc_event
@@ -216,7 +216,7 @@ WHERE
 		FROM
 			_cluster_info_ AS _cluster_info_a_
 		WHERE
-			_cluster_info_a_.coinc_event_id == coinc_event.coinc_event_id AND _cluster_info_a_.ranking_stat < 3.0
+			_cluster_info_a_.coinc_event_id == coinc_event.coinc_event_id AND _cluster_info_a_.ranking_stat < 4.0
 	);
 DROP INDEX tmpindex1;
 DROP INDEX tmpindex2;