graph/db: thread context through to DeleteLightningNode

graph/db/sql_store.go

@@ -291,8 +291,8 @@ func (s *SQLStore) AddrsForNode(nodePub *btcec.PublicKey) (bool, []net.Addr,
 // from the database according to the node's public key.
 //
 // NOTE: part of the V1Store interface.
-func (s *SQLStore) DeleteLightningNode(pubKey route.Vertex) error {
-	ctx := context.TODO()
+func (s *SQLStore) DeleteLightningNode(ctx context.Context,
+	pubKey route.Vertex) error {
 
 	err := s.db.ExecTx(ctx, sqldb.WriteTxOpt(), func(db SQLQueries) error {
 		res, err := db.DeleteNodeByPubKey(