Remove unneeded kibana_port parameter
diff --git a/kibana/server/single.yml b/kibana/server/single.yml
index e8ec886..9a2d6cb 100644
--- a/kibana/server/single.yml
+++ b/kibana/server/single.yml
@@ -1,8 +1,6 @@
 classes:
 - service.kibana.server.single
 parameters:
-  _param:
-    kibana_port: 5601
   kibana:
     server:
       enabled: true