diff --git a/dynamic_tree.go b/dynamic_tree.go
index 720268c..0bb2401 100644
--- a/dynamic_tree.go
+++ b/dynamic_tree.go
@@ -36,8 +36,6 @@ func isLastLevel(node Node, maxLevel int) bool {
 	return maxLevel-1 == node.Level()
 }
 
-func isBeforeLastLevel(node Node, maxLevel int) bool {
-	return maxLevel-1 > node.Level()
 }
 
 //////////////////////////////