diff --git a/crates/iota-core/src/execution_cache.rs b/crates/iota-core/src/execution_cache.rs
index ee795648f53..e9d885485ed 100644
--- a/crates/iota-core/src/execution_cache.rs
+++ b/crates/iota-core/src/execution_cache.rs
@@ -17,7 +17,7 @@ use iota_types::{
object::{Object, Owner},
storage::{
BackingPackageStore, BackingStore, ChildObjectResolver, InputKey, MarkerValue, ObjectKey,
- ObjectOrTombstone, ObjectStore, PackageObject, ParentSync,
+ ObjectOrTombstone, ObjectStore, PackageObject,
error::{Error as StorageError, Result as StorageResult},
},
transaction::{VerifiedSignedTransaction, VerifiedTransaction},
@@ -819,15 +819,6 @@ macro_rules! implement_storage_traits {
ObjectCacheRead::get_package_object(self, package_id)
}
}
-
- impl ParentSync for $implementor {
- fn get_latest_parent_entry_ref_deprecated(
- &self,
- object_id: ObjectID,
- ) -> IotaResult