message: storage-client: remove blocking get_latest_account_state method
  Closes:
  Approved by: zamsden
diff: @@ -310,17 +310,6 @@ pub trait StorageRead: Send + Sync {
  /// ../libradb/struct.LibraDB.html#method.get_latest_state_root
  async fn get_latest_state_root_async(&self) -> Result<(Version, HashValue)>;
  - /// See [`LibraDB::get_latest_account_state`].
  - ///
  - /// [`LibraDB::get_latest_account_state`]:
  - /// ../libradb/struct.LibraDB.html#method.get_latest_account_state
  - fn get_latest_account_state(
  - &self,
  - address: AccountAddress,
  - ) -> Result<Option<AccountStateBlob>> {
  - block_on(self.get_latest_account_state_async(address))
  - }
  -
  /// See [`LibraDB::get_latest_account_state`].
  ///
  /// [`LibraDB::get_latest_account_state`]:
  