Remove unused import

Signed-off-by: Bram Stoeller <[email protected]>

src/power_grid_model_io/data_stores/csv_dir_store.py

@@ -6,7 +6,7 @@
 """
 
 from pathlib import Path
-from typing import Any, Callable, Dict, List
+from typing import Any, Dict, List
 
 import pandas as pd