channeldb/migration_01_to_11: remove unused code

channeldb/migration_01_to_11/payments.go

@@ -375,48 +375,6 @@ func fetchPayment(bucket *bbolt.Bucket) (*Payment, error) {
 	return p, nil
 }
 
-// DeletePayments deletes all completed and failed payments from the DB.
-func (db *DB) DeletePayments() error {
-	return db.Update(func(tx *bbolt.Tx) error {
-		payments := tx.Bucket(paymentsRootBucket)
-		if payments == nil {
-			return nil
-		}
-
-		var deleteBuckets [][]byte
-		err := payments.ForEach(func(k, _ []byte) error {
-			bucket := payments.Bucket(k)
-			if bucket == nil {
-				// We only expect sub-buckets to be found in
-				// this top-level bucket.
-				return fmt.Errorf("non bucket element in " +
-					"payments bucket")
-			}
-
-			// If the status is InFlight, we cannot safely delete
-			// the payment information, so we return early.
-			paymentStatus := fetchPaymentStatus(bucket)
-			if paymentStatus == StatusInFlight {
-				return nil
-			}
-
-			deleteBuckets = append(deleteBuckets, k)
-			return nil
-		})
-		if err != nil {
-			return err
-		}
-
-		for _, k := range deleteBuckets {
-			if err := payments.DeleteBucket(k); err != nil {
-				return err
-			}
-		}
-
-		return nil
-	})
-}
-
 func serializePaymentCreationInfo(w io.Writer, c *PaymentCreationInfo) error {
 	var scratch [8]byte