Fix lint

qutebrowser/browser/webengine/webenginetab.py

@@ -348,6 +348,7 @@ class WebEngineTab(browsertab.AbstractTab):
         js_ret = None
 
         def js_cb(val):
+            """Handle return value from JS and stop blocking."""
             nonlocal js_ret
             js_ret = val
             loop.quit()

tests/unit/browser/test_tab.py

@@ -20,7 +20,6 @@
 import pytest
 
 from PyQt5.QtCore import PYQT_VERSION, pyqtSignal, QPoint
-from PyQt5.QtGui import QColor
 
 from qutebrowser.browser import browsertab
 from qutebrowser.keyinput import modeman