Remove unused function multi_get_next_shared_object_versions() (Mys…

…tenLabs#16752)

## Description 


## Test Plan 

CI

---
If your changes are not user-facing and do not break anything, you can
skip the following section. Otherwise, please briefly describe what has
changed under the Release Notes section.

### Type of Change (Check all that apply)

- [ ] protocol change
- [ ] user-visible impact
- [ ] breaking change for a client SDKs
- [ ] breaking change for FNs (FN binary must upgrade)
- [ ] breaking change for validators or node operators (must upgrade
binaries)
- [ ] breaking change for on-chain data layout
- [ ] necessitate either a data wipe or data migration

### Release notes

crates/sui-core/src/authority/authority_per_epoch_store.rs

@@ -1165,13 +1165,6 @@ impl AuthorityPerEpochStore {
         Ok(self.tables()?.transaction_cert_signatures.get(tx_digest)?)
     }
 
-    pub fn multi_get_next_shared_object_versions<'a>(
-        &self,
-        ids: impl Iterator<Item = &'a ObjectID>,
-    ) -> SuiResult<Vec<Option<SequenceNumber>>> {
-        Ok(self.tables()?.next_shared_object_versions.multi_get(ids)?)
-    }
-
     /// Resolves InputObjectKinds into InputKeys, by consulting the shared object version
     /// assignment table.
     pub(crate) fn get_input_object_keys(