Revert "[user errors] compulsory case names, allow multiple (#110733)" (#110783)
This reverts commit 983f6f36dbaf0210360926547b05deb1e4f798a4. I have no idea how to revert https://github.com/pytorch/pytorch/pull/110733 with the bot. So reverting it manually for now.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/110783
Approved by: https://github.com/ZainRizvi, https://github.com/kit1980