Remove deprecated lib2to3 from the grammar checklist (#620)

isidentical · web-flow · commit 310fa944075e · 2020-10-20T18:55:16.000-07:00
diff --git a/grammar.rst b/grammar.rst
@@ -55,7 +55,5 @@ Note: sometimes things mysteriously don't work.  Before giving up, try ``make cl
 
 * :file:`Lib/tokenize.py` needs changes to match changes to the tokenizer.
 
-* :file:`Lib/lib2to3/Grammar.txt` may need changes to match the Grammar.
-
 * Documentation must be written! Specifically, one or more of the pages in
   :file:`Doc/reference/` will need to be updated.
