Remove `run_functional_checks` from `test_autograd` and create necessary OpInfos (#64993)
Summary:
OpInfo tracker: https://github.com/pytorch/pytorch/issues/54261
- Eliminate duplicated testing logic in test_autograd
- Moved tests that rely on this testing logic to use OpInfos
- `cat` already has OpInfo (no action needed)
- Created OpInfo for `block_diag` and `broadcast_tensors`
Running into some FX errors. Added op to skip-list and created an issue here: https://github.com/pytorch/pytorch/issues/64997
Both `block_diag` and `broadcast_tensors` are variadic, so skipping `test_variant_consistency_jit` (from comments on other OpInfos, it looks like JIT does not support variadic tensors)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64993
Reviewed By: jbschlosser
Differential Revision: D30961736
Pulled By: soulitzer
fbshipit-source-id: e169305384a683acae1178c4e12e9e214a67226a
