Revert "Refactoring to move code to right locations. Attempt at breaking dependency cycles."

This reverts commit 58819b4dcc697f63872bee9f3ddd41a0c4d8fca5.
diff --git a/core/store/dist/src/main/java/org/onlab/onos/store/device/impl/InternalPortEventSerializer.java b/core/store/dist/src/main/java/org/onlab/onos/store/device/impl/InternalPortEventSerializer.java
index ede88f1..6fff395 100644
--- a/core/store/dist/src/main/java/org/onlab/onos/store/device/impl/InternalPortEventSerializer.java
+++ b/core/store/dist/src/main/java/org/onlab/onos/store/device/impl/InternalPortEventSerializer.java
@@ -5,7 +5,7 @@
 import org.onlab.onos.net.DeviceId;
 import org.onlab.onos.net.device.PortDescription;
 import org.onlab.onos.net.provider.ProviderId;
-import org.onlab.onos.store.Timestamped;
+import org.onlab.onos.store.common.impl.Timestamped;
 
 import com.esotericsoftware.kryo.Kryo;
 import com.esotericsoftware.kryo.Serializer;