Fix lint error (#2010)

nbconvert/exporters/templateexporter.py

@@ -539,7 +539,7 @@ def _init_preprocessors(self):
         #  * We rely on recursive_update, which can only merge dicts, lists will be overwritten
         #  * We can use the key with numerical prefixing to guarantee ordering (/etc/*.d/XY-file style)
         #  * We can disable preprocessors by overwriting the value with None
-        for _, preprocessor in sorted(preprocessors.items(), key=lambda x: x[0]):  # type:ignore
+        for _, preprocessor in sorted(preprocessors.items(), key=lambda x: x[0]):
             if preprocessor is not None:
                 kwargs = preprocessor.copy()
                 preprocessor_cls = kwargs.pop("type")

nbconvert/filters/tests/test_highlight.py

@@ -79,9 +79,7 @@ def test_inject_html(self):
         assert "<script>alert(1)</script>" not in out
 
     def _extract_tokens(self, root, cls):
-        return set(  # noqa
-            map(lambda x: x.text, root.findall(".//*[@class='" + cls + "']"))  # type:ignore
-        )
+        return set(map(lambda x: x.text, root.findall(".//*[@class='" + cls + "']")))  # noqa
 
     def _try_highlight(self, method, test, tokens):
         """Try highlighting source, look for key tokens"""