Revert "sym_numel (#82374)" (#82726)
TSIA
It looks like this PR #82374 is breaking mac builds on trunk but I can't revert it normally since there's a merge conflict in the XLA hash.
<img width="1753" alt="image" src="https://user-images.githubusercontent.com/34172846/182644661-b7fdda4b-e5ce-45c3-96a2-ad6737d169ae.png">
I reverted it and resolved the conflict using the old XLA hash that this commit was based upon
Pull Request resolved: https://github.com/pytorch/pytorch/pull/82726
Approved by: https://github.com/albanD, https://github.com/janeyx99
