Fix pylint warnings

qutebrowser/misc/editor.py

@@ -23,7 +23,7 @@ import os
 import tempfile
 
 from PyQt5.QtCore import (pyqtSignal, pyqtSlot, QObject, QProcess,
-    QFileSystemWatcher)
+                          QFileSystemWatcher)
 
 from qutebrowser.config import config
 from qutebrowser.utils import message, log

tests/unit/config/test_configcommands.py

@@ -22,7 +22,7 @@ import logging
 import unittest.mock
 
 import pytest
-from PyQt5.QtCore import QUrl, QProcess
+from PyQt5.QtCore import QUrl
 
 from qutebrowser.config import configcommands
 from qutebrowser.commands import cmdexc