[VOL-2573] Delete all logical ports on OLT Delete

Change-Id: Id809e176fe3a902aabea8cbce573fbf9710d9b10
diff --git a/rw_core/coreif/device_manager_if.go b/rw_core/coreif/device_manager_if.go
index 7a9e64d..60da009 100644
--- a/rw_core/coreif/device_manager_if.go
+++ b/rw_core/coreif/device_manager_if.go
@@ -39,4 +39,5 @@
 	DeleteAllChildDevices(context.Context, *voltha.Device) error
 	RunPostDeviceDelete(context.Context, *voltha.Device) error
 	ChildDeviceLost(context.Context, *voltha.Device) error
+	DeleteAllUNILogicalPorts(context.Context, *voltha.Device) error
 }