Move deprecated flow batch APIs to a less obvious place

Change-Id: I8078aadbafad1e5a339d74859bed94e25c9c6e8c
diff --git a/core/api/src/main/java/org/onosproject/net/flow/FlowRuleProvider.java b/core/api/src/main/java/org/onosproject/net/flow/FlowRuleProvider.java
index cbf1da5..d20f9aa 100644
--- a/core/api/src/main/java/org/onosproject/net/flow/FlowRuleProvider.java
+++ b/core/api/src/main/java/org/onosproject/net/flow/FlowRuleProvider.java
@@ -16,6 +16,7 @@
 package org.onosproject.net.flow;
 
 import org.onosproject.core.ApplicationId;
+import org.onosproject.net.flow.oldbatch.FlowRuleBatchOperation;
 import org.onosproject.net.provider.Provider;
 
 /**