Remove devices array from the Port JSON representation.

The array was never populated with device data, it was only added to maintain compatability with the old REST API.

Change-Id: Id89e9732c1ae229b7accc13b97283b8e000cd3ae
diff --git a/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java b/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java
index 3732151..fb88f25 100644
--- a/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java
+++ b/src/main/java/net/onrc/onos/core/topology/serializers/PortSerializer.java
@@ -25,8 +25,6 @@
         jsonGenerator.writeStringField("dpid", HexString.toHexString(port.getDpid()));
         jsonGenerator.writeNumberField("number", port.getNumber());
         jsonGenerator.writeStringField("desc", port.getDescription());
-        jsonGenerator.writeArrayFieldStart("devices");
-        jsonGenerator.writeEndArray();
         jsonGenerator.writeEndObject();
     }