fix tox

brian_dashboard_manager/templating/helpers.py

@@ -5,7 +5,6 @@ necessary data to generate the dashboards from templates.
 from collections import defaultdict
 from concurrent.futures import ProcessPoolExecutor
 import logging
-import json
 from itertools import product
 from functools import partial, reduce
 from string import ascii_uppercase

test/test_update.py

-import itertools
 import pytest
 import responses
 import json
@@ -604,7 +603,6 @@ def generate_folder(data):
     }
 
 
-
 @responses.activate
 @pytest.mark.parametrize(
     "folder_name, excluded_nrens, expected_nrens",
@@ -650,7 +648,7 @@ def test_provision_nren_folder(
     )
 
     # just return a generated folder
-    _mocked_find_folder = mocker.patch(
+    mocker.patch(
         "brian_dashboard_manager.grafana.provision.find_folder",
         return_value=generate_folder({"uid": "testfolderuid", "title": "testfolder"}),
     )