use config fixture, get plugin via unregister

tests/test_logging.py

@@ -9,17 +9,17 @@ from flask.logging import default_handler, has_level_handler, \
 
 
 @pytest.fixture(autouse=True)
-def reset_logging(monkeypatch):
+def reset_logging(pytestconfig):
     root_handlers = logging.root.handlers[:]
+    logging.root.handlers = []
     root_level = logging.root.level
 
     logger = logging.getLogger('flask.app')
     logger.handlers = []
     logger.setLevel(logging.NOTSET)
 
-    logging_plugin = pytest.config.pluginmanager.getplugin('logging-plugin')
-    pytest.config.pluginmanager.unregister(name='logging-plugin')
-    logging.root.handlers = []
+    logging_plugin = pytestconfig.pluginmanager.unregister(
+        name='logging-plugin')
 
     yield
 
@@ -30,7 +30,7 @@ def reset_logging(monkeypatch):
     logger.setLevel(logging.NOTSET)
 
     if logging_plugin:
-        pytest.config.pluginmanager.register(logging_plugin, 'logging-plugin')
+        pytestconfig.pluginmanager.register(logging_plugin, 'logging-plugin')
 
 
 def test_logger(app):