ONOS-6886 Move interface classes from incubator to core

Change-Id: Iaae4d98279e4b77fc3f0b5a63d547921f93aeb46
diff --git a/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java b/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java
index c41b869..13d6da3 100644
--- a/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java
+++ b/apps/pim/src/main/java/org/onosproject/pim/impl/PimInterfaceManager.java
@@ -24,10 +24,10 @@
 import org.apache.felix.scr.annotations.ReferenceCardinality;
 import org.apache.felix.scr.annotations.Service;
 import org.onlab.util.SafeRecurringTask;
-import org.onosproject.incubator.net.intf.Interface;
-import org.onosproject.incubator.net.intf.InterfaceEvent;
-import org.onosproject.incubator.net.intf.InterfaceListener;
-import org.onosproject.incubator.net.intf.InterfaceService;
+import org.onosproject.net.intf.Interface;
+import org.onosproject.net.intf.InterfaceEvent;
+import org.onosproject.net.intf.InterfaceListener;
+import org.onosproject.net.intf.InterfaceService;
 import org.onosproject.incubator.net.routing.Route;
 import org.onosproject.incubator.net.routing.RouteService;
 import org.onosproject.net.ConnectPoint;