Use Collection#forEach() instead of Stream#forEach() for simplicity

Change-Id: I0a1aea4bdb5d305c50273e6ff749fe71bd2a295a
diff --git a/cli/src/main/java/org/onosproject/cli/net/MapsListCommand.java b/cli/src/main/java/org/onosproject/cli/net/MapsListCommand.java
index 7df8ab6..a48d870 100644
--- a/cli/src/main/java/org/onosproject/cli/net/MapsListCommand.java
+++ b/cli/src/main/java/org/onosproject/cli/net/MapsListCommand.java
@@ -60,13 +60,12 @@
         ArrayNode maps = mapper.createArrayNode();
 
         // Create a JSON node for each map
-        mapInfo.stream()
-            .forEach(info -> {
-                ObjectNode map = mapper.createObjectNode();
-                map.put("name", info.name())
-                   .put("size", info.size());
-                maps.add(map);
-            });
+        mapInfo.forEach(info -> {
+            ObjectNode map = mapper.createObjectNode();
+            map.put("name", info.name())
+                    .put("size", info.size());
+            maps.add(map);
+        });
 
         return maps;
     }