Remove unused imports from sum_doses.py
@@ -13,11 +13,9 @@ See the License for the specific language governing permissions and
limitations under the License.
"""
-import copy
import pathlib
from typing import BinaryIO, List, Sequence
-from pymedphys._imports import numpy as np
from pymedphys._imports import pydicom
from pymedphys._imports import streamlit as st
