mypy: Update ignore comments

qutebrowser/extensions/loader.py

@@ -122,7 +122,7 @@ def _walk_pyinstaller() -> Iterator[ExtensionInfo]:
     toc: Set[str] = set()
     for importer in pkgutil.iter_importers('qutebrowser'):
         if hasattr(importer, 'toc'):
-            toc |= importer.toc
+            toc |= importer.toc  # type: ignore[union-attr]
     for name in toc:
         if name.startswith(components.__name__ + '.'):
             yield ExtensionInfo(name=name)

qutebrowser/misc/checkpyver.py

@@ -49,8 +49,7 @@ def check_python_version():
         version_str = '.'.join(map(str, sys.version_info[:3]))
         text = ("At least Python 3.6.1 is required to run qutebrowser, but " +
                 "it's running with " + version_str + ".\n")
-        if (Tk and  # type: ignore[unreachable]
-                '--no-err-windows' not in sys.argv):  # pragma: no cover
+        if Tk and '--no-err-windows' not in sys.argv:  # pragma: no cover
             root = Tk()
             root.withdraw()
             messagebox.showerror("qutebrowser: Fatal error!", text)

qutebrowser/utils/log.py

@@ -491,8 +491,7 @@ def qt_message_handler(msg_type: QtCore.QtMsgType,
     else:
         func = context.function
 
-    if (context.category is None or  # type: ignore[unreachable]
-            context.category == 'default'):
+    if context.category is None or context.category == 'default':
         name = 'qt'
     else:
         name = 'qt-' + context.category