Update torch flatbuffer usage to OSS version (#71957)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71957
Update users of flatbuffer serializer/loader to use the version in torch/csrc.
Test Plan:
sandcastle
Ran `buck run :test_models -- -k test_aten_relu` passes
Reviewed By: gmagogsfm
Differential Revision: D33720611
fbshipit-source-id: 6cdf7ab43ffca83327a677853be8f4918c47d53d
(cherry picked from commit 4f59e3547e2cd346a3f2310bc2d1f6a931fb826e)
