[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

tests/unit/task_processor/test_unit_task_processor_managers.py

@@ -3,7 +3,6 @@
 from typing import Generator
 
 import pytest
-from django.db.utils import ProgrammingError
 from django.utils import timezone
 from pytest_django.fixtures import SettingsWrapper
 from pytest_mock import MockerFixture