Remove outdated warning about RecursiveScriptModule not being copiable (#64085)
Summary:
RecursiveScriptModule has its customized `__copy__` and `__deepcopy__` defined. The warning/error that says it is not copiable is outdated
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64085
Reviewed By: rohan-varma
Differential Revision: D30598623
Pulled By: gmagogsfm
fbshipit-source-id: 0701d8617f42d818bc7b88244caee4cd47fbe976
