Revert "Add meta kernel coverage for aten.unsafe_split, aten.unsafe_chunk (#92608)"
This reverts commit 36e1f7bc2b1e399808173dacb9aa1ea8b89fbbbf.
Reverted https://github.com/pytorch/pytorch/pull/92608 on behalf of https://github.com/ezyang due to test_aot_autograd_symbolic_exhaustive_unsafe_split_cpu_float32 (main.TestEagerFusionOpInfoCPU) is now xpass
