Clean up now unused imports

Author: bouwew

plugwise/helper.py

@@ -5,7 +5,6 @@
 
 from __future__ import annotations
 
-import datetime as dt
 from typing import cast
 
 from plugwise.common import SmileCommon
@@ -50,9 +49,6 @@
     skip_obsolete_measurements,
 )
 
-# Time related
-from dateutil import tz
-from dateutil.parser import parse
 from defusedxml import ElementTree as etree
 from munch import Munch
 from packaging import version