diff --git a/src/runtime/branch.rs b/src/runtime/branch.rs
index 8d35090031d08c0ba205df2726d51cf4d9ad5be0..5aaabef1b7cd41c9348bbae7e1d4d9dc2d821291 100644
--- a/src/runtime/branch.rs
+++ b/src/runtime/branch.rs
@@ -256,15 +256,6 @@ impl ExecTree {
         }
     }
 
-    /// Returns an iterator that starts with the provided branch, and then
-    /// continues to visit all of the branch's parents.
-    pub fn iter_parents(&self, branch_id: BranchId) -> BranchParentIter {
-        return BranchParentIter{
-            branches: self.branches.as_slice(),
-            index: branch_id.index as usize,
-        }
-    }
-
     // --- Preparing and finishing a speculative round
 
     /// Starts a synchronous round by cloning the non-sync branch and marking it
@@ -332,26 +323,6 @@ impl IndexMut<BranchId> for ExecTree {
     }
 }
 
-/// Iterator over the parents of an `ExecTree` branch.
-pub(crate) struct BranchParentIter<'a> {
-    branches: &'a [Branch],
-    index: usize,
-}
-
-impl<'a> Iterator for BranchParentIter<'a> {
-    type Item = &'a Branch;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        if self.index == 0 {
-            return None;
-        }
-
-        let branch = &self.branches[self.index];
-        self.index = branch.parent_id.index as usize;
-        return Some(branch);
-    }
-}
-
 // -----------------------------------------------------------------------------
 // FakeTree
 // -----------------------------------------------------------------------------