diff --git a/lib/src/tree.rs b/lib/src/tree.rs
index 9da4df83c..03046449d 100644
--- a/lib/src/tree.rs
+++ b/lib/src/tree.rs
@@ -84,12 +84,6 @@ pub struct DiffSummary {
     pub removed: Vec<RepoPath>,
 }
 
-impl DiffSummary {
-    pub fn is_empty(&self) -> bool {
-        self.modified.is_empty() && self.added.is_empty() && self.removed.is_empty()
-    }
-}
-
 impl Tree {
     pub fn new(store: Arc<Store>, dir: RepoPath, id: TreeId, data: Arc<backend::Tree>) -> Self {
         Tree {