Removed some unused imports. (#8424)

These were not annotated as something that should be ignored, and the test-suite
passes with these changes.

acme/acme/__init__.py

@@ -6,7 +6,6 @@ This module is an implementation of the `ACME protocol`_.
 
 """
 import sys
-import warnings
 
 # This code exists to keep backwards compatibility with people using acme.jose
 # before it became the standalone josepy package.

certbot-ci/windows_installer_integration_tests/conftest.py

@@ -9,8 +9,6 @@ See https://docs.pytest.org/en/latest/reference.html#hook-reference
 from __future__ import print_function
 import os
 
-import pytest
-
 ROOT_PATH = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
 
 

certbot/certbot/_internal/plugins/null.py

@@ -1,7 +1,6 @@
 """Null plugin."""
 import logging
 
-import zope.component
 import zope.interface
 
 from certbot import interfaces

certbot/tests/client_test.py

@@ -13,7 +13,6 @@ except ImportError: # pragma: no cover
 from certbot import errors
 from certbot import util
 from certbot._internal import account
-from certbot.compat import filesystem
 from certbot.compat import os
 import certbot.tests.util as test_util
 

certbot/tests/compat/filesystem_test.py

@@ -1,7 +1,6 @@
 """Tests for certbot.compat.filesystem"""
 import contextlib
 import errno
-import stat
 import unittest
 
 try: