remove auto-added import
@@ -18,8 +18,6 @@ from typing import Any, Dict, Tuple
from pymedphys._imports import numpy as np
from pymedphys._imports import pandas as pd # pylint: disable = unused-import
-from altair.vegalite.v4.schema.channels import Key
-
from pymedphys._streamlit.utilities import config as _config
from pymedphys._streamlit.utilities import misc
