diff --git a/src/ert/simulator/batch_simulator.py b/src/ert/simulator/batch_simulator.py
index 70fe59613a5..20593b20aeb 100644
--- a/src/ert/simulator/batch_simulator.py
+++ b/src/ert/simulator/batch_simulator.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 from typing import TYPE_CHECKING, Any, Callable, Dict, List, Optional, Tuple, Union
-from uuid import UUID
 
 import numpy as np
 
@@ -92,7 +91,6 @@ def callback(*args, **kwargs):
         self.control_keys = set(controls.keys())
         self.result_keys = set(results)
         self.callback = callback
-        self._experiment_id: Optional[UUID] = None
 
         ens_config = self.ert_config.ensemble_config
         for control_name, variables in controls.items():