Fixed imports

exasol_integration_test_docker_environment/lib/base/base_task.py

@@ -3,7 +3,7 @@
 import logging
 import shutil
 from pathlib import Path
-from typing import Dict, List, Generator, Any, Union, Set, Optional
+from typing import Dict, List, Generator, Any, Union, Set
 
 import luigi
 import six

exasol_integration_test_docker_environment/lib/test_environment/spawn_test_container.py

@@ -1,4 +1,4 @@
-from typing import List
+from typing import List, Optional
 
 import luigi
 import netaddr

test/integration/conftest.py

@@ -1,6 +1,5 @@
 import contextlib
 import io
-from contextlib import _GeneratorContextManager
 
 import pytest