Remove extra newline

Author: tomasr8

Lib/test/test_tools/test_i18n.py

@@ -439,7 +439,6 @@ def test_extract_all_comments(self):
         Test that the --add-comments option without an
         explicit tag extracts all translator comments.
         """
-
         for arg in ('--add-comments', '-c'):
             with self.subTest(arg=arg):
                 data = self.extract_from_str(dedent('''\