fix linter

Author: FSadrieh

evap/staff/views.py

@@ -3,7 +3,7 @@
 from collections import OrderedDict, defaultdict, namedtuple
 from collections.abc import Container
 from dataclasses import dataclass
-from datetime import date, datetime, time, timedelta
+from datetime import date, datetime, timedelta
 from typing import Any, cast
 
 import openpyxl