Remove unnecessary boxing

Change-Id: I37c6490aef820ad2e3cd480cc90d9b6d988c45bd
diff --git a/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java b/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java
index 441219a..33e9994 100644
--- a/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java
+++ b/core/net/src/main/java/org/onosproject/net/flow/impl/FlowRuleManager.java
@@ -555,7 +555,7 @@
 
 
             for (DeviceId deviceId : perDeviceBatches.keySet()) {
-                Long id = idGenerator.getNewId();
+                long id = idGenerator.getNewId();
                 final FlowRuleBatchOperation b = new FlowRuleBatchOperation(perDeviceBatches.get(deviceId),
                                                deviceId, id);
                 pendingFlowOperations.put(id, this);