Remove redundant toString() calls

Change-Id: Ibb91f90054d5791733353308e86d0494734f63aa
diff --git a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/TenantNetworkCodec.java b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/TenantNetworkCodec.java
index 07ae9f8..1d034b5 100644
--- a/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/TenantNetworkCodec.java
+++ b/apps/vtnrsc/src/main/java/org/onosproject/vtnrsc/web/TenantNetworkCodec.java
@@ -33,7 +33,7 @@
         checkNotNull(network, "Network cannot be null");

         ObjectNode result = context.mapper().createObjectNode()

                 .put("id", network.id().toString())

-                .put("name", network.name().toString())

+                .put("name", network.name())

                 .put("admin_state_up", network.adminStateUp())

                 .put("status", "" + network.state())

                 .put("shared", network.shared())