[typing] suppress errors in fbcode/caffe2 - batch 2

Test Plan: Sandcastle

Differential Revision: D30222378

fbshipit-source-id: 6a0a5d210266f19de63273240a080365c9143eb0

Author: Pyre Bot Jr

caffe2/python/serialized_test/serialized_test_util.py

@@ -264,6 +264,7 @@ def assertReferenceChecks(
     def set_disable_serialized_check(self, val: bool):
         orig = getattr(_output_context, 'disable_serialized_check', False)
         try:
+            # pyre-fixme[16]: `local` has no attribute `disable_serialized_check`.
             _output_context.disable_serialized_check = val
             yield
         finally: