diff --git a/lib/src/default_index_store.rs b/lib/src/default_index_store.rs
index d0c7fffe6..6eb90cd5a 100644
--- a/lib/src/default_index_store.rs
+++ b/lib/src/default_index_store.rs
@@ -692,10 +692,6 @@ impl Index for MutableIndexImpl {
         self
     }
 
-    fn commit_id_to_pos(&self, commit_id: &CommitId) -> Option<IndexPosition> {
-        CompositeIndex(self).commit_id_to_pos(commit_id)
-    }
-
     fn shortest_unique_commit_id_prefix_len(&self, commit_id: &CommitId) -> usize {
         CompositeIndex(self).shortest_unique_commit_id_prefix_len(commit_id)
     }
@@ -708,10 +704,6 @@ impl Index for MutableIndexImpl {
         CompositeIndex(self).entry_by_id(commit_id)
     }
 
-    fn entry_by_pos(&self, pos: IndexPosition) -> IndexEntry {
-        CompositeIndex(self).entry_by_pos(pos)
-    }
-
     fn has_id(&self, commit_id: &CommitId) -> bool {
         CompositeIndex(self).has_id(commit_id)
     }
@@ -1773,10 +1765,6 @@ impl Index for ReadonlyIndexImpl {
         self
     }
 
-    fn commit_id_to_pos(&self, commit_id: &CommitId) -> Option<IndexPosition> {
-        CompositeIndex(self).commit_id_to_pos(commit_id)
-    }
-
     fn shortest_unique_commit_id_prefix_len(&self, commit_id: &CommitId) -> usize {
         CompositeIndex(self).shortest_unique_commit_id_prefix_len(commit_id)
     }
@@ -1789,10 +1777,6 @@ impl Index for ReadonlyIndexImpl {
         CompositeIndex(self).entry_by_id(commit_id)
     }
 
-    fn entry_by_pos(&self, pos: IndexPosition) -> IndexEntry {
-        CompositeIndex(self).entry_by_pos(pos)
-    }
-
     fn has_id(&self, commit_id: &CommitId) -> bool {
         CompositeIndex(self).has_id(commit_id)
     }
diff --git a/lib/src/index.rs b/lib/src/index.rs
index ec19df57b..c6d1fa0e7 100644
--- a/lib/src/index.rs
+++ b/lib/src/index.rs
@@ -20,7 +20,7 @@ use thiserror::Error;
 
 use crate::backend::{CommitId, ObjectId};
 use crate::commit::Commit;
-use crate::default_index_store::{IndexEntry, IndexPosition, RevWalk};
+use crate::default_index_store::{IndexEntry, RevWalk};
 use crate::op_store::OperationId;
 use crate::operation::Operation;
 use crate::repo::Repo;
@@ -50,16 +50,12 @@ pub trait IndexStore: Send + Sync + Debug {
 pub trait Index: Send + Sync {
     fn as_any(&self) -> &dyn Any;
 
-    fn commit_id_to_pos(&self, commit_id: &CommitId) -> Option<IndexPosition>;
-
     fn shortest_unique_commit_id_prefix_len(&self, commit_id: &CommitId) -> usize;
 
     fn resolve_prefix(&self, prefix: &HexPrefix) -> PrefixResolution<CommitId>;
 
     fn entry_by_id(&self, commit_id: &CommitId) -> Option<IndexEntry>;
 
-    fn entry_by_pos(&self, pos: IndexPosition) -> IndexEntry;
-
     fn has_id(&self, commit_id: &CommitId) -> bool;
 
     fn is_ancestor(&self, ancestor_id: &CommitId, descendant_id: &CommitId) -> bool;