Lint: Fix unused-import (F401)

dangerzone/isolation_provider/base.py

@@ -6,7 +6,6 @@ import signal
 import subprocess
 import sys
 from abc import ABC, abstractmethod
-from pathlib import Path
 from typing import IO, Callable, Iterator, Optional
 
 import fitz

dev_scripts/env.py

@@ -8,7 +8,6 @@ import platform
 import shutil
 import subprocess
 import sys
-import urllib.request
 from datetime import date
 
 DEFAULT_GUI = True

tests/gui/test_main_window.py

@@ -7,7 +7,6 @@ from typing import List
 
 from pytest import MonkeyPatch, fixture
 from pytest_mock import MockerFixture
-from pytest_subprocess import FakeProcess
 from pytestqt.qtbot import QtBot
 
 from dangerzone.document import Document