2 files changed, 2 insertions, 12 deletions

diff --git a/crates/ra_syntax/src/algo/mod.rs b/crates/ra_syntax/src/algo/mod.rs
index 8de44c586..3716a6000 100644
--- a/crates/ra_syntax/src/algo/mod.rs
+++ b/crates/ra_syntax/src/algo/mod.rs
@@ -94,10 +94,6 @@ pub fn find_covering_node(root: SyntaxNodeRef, range: TextRange) -> SyntaxNodeRe
     common_ancestor(left, right)
 }
 
-pub fn ancestors<'a>(node: SyntaxNodeRef<'a>) -> impl Iterator<Item=SyntaxNodeRef<'a>> {
-    generate(Some(node), |&node| node.parent())
-}
-
 #[derive(Debug)]
 pub enum Direction {
     Forward,
@@ -115,8 +111,8 @@ pub fn siblings<'a>(
 }
 
 fn common_ancestor<'a>(n1: SyntaxNodeRef<'a>, n2: SyntaxNodeRef<'a>) -> SyntaxNodeRef<'a> {
-    for p in ancestors(n1) {
-        if ancestors(n2).any(|a| a == p) {
+    for p in n1.ancestors() {
+        if n2.ancestors().any(|a| a == p) {
             return p;
         }
     }
diff --git a/crates/ra_syntax/src/algo/walk.rs b/crates/ra_syntax/src/algo/walk.rs
index 536ee705f..8e294d965 100644
--- a/crates/ra_syntax/src/algo/walk.rs
+++ b/crates/ra_syntax/src/algo/walk.rs
@@ -3,12 +3,6 @@ use {
     algo::generate,
 };
 
-pub fn preorder<'a>(root: SyntaxNodeRef<'a>) -> impl Iterator<Item = SyntaxNodeRef<'a>> {
-    walk(root).filter_map(|event| match event {
-        WalkEvent::Enter(node) => Some(node),
-        WalkEvent::Exit(_) => None,
-    })
-}
 
 #[derive(Debug, Copy, Clone)]
 pub enum WalkEvent<'a> {