diff --git a/integration/service/oasis/stationgraph/neighbor.go b/integration/service/oasis/stationgraph/neighbor.go
deleted file mode 100644
index 338a7f7ac19..00000000000
--- a/integration/service/oasis/stationgraph/neighbor.go
+++ /dev/null
@@ -1,14 +0,0 @@
-package stationgraph
-
-// Neighborer defines adjacent list for given node
-type Neighborer interface {
-
-	// Neighbors returns neighbor information for given node
-	Neighbors() []*neighbor
-}
-
-type neighbor struct {
-	targetNodeID nodeID
-	distance     float64
-	duration     float64
-}