Remove torch.cholesky overrides

[malfet]

torch.cholesky has been an alias for torch.linalg.cholesky for several years and is getting removed by pytorch/pytorch#186817

Update the repo to use torch.linalg.cholesky

Add torch.cholesky to skiplist, but check that torch.linalg.cholesky tests are still running

% python test/test_ops.py -v -k cholesky                                                              
op_db size:  697 testing:  657
test_reference_eager_cholesky_inverse_cpu_float32 (__main__.TestOpInfoCPU.test_reference_eager_cholesky_inverse_cpu_float32) ... ok
test_reference_eager_linalg_cholesky_cpu_float32 (__main__.TestOpInfoCPU.test_reference_eager_linalg_cholesky_cpu_float32) ... ok
test_reference_eager_linalg_cholesky_ex_cpu_float32 (__main__.TestOpInfoCPU.test_reference_eager_linalg_cholesky_ex_cpu_float32) ... ok

----------------------------------------------------------------------
Ran 3 tests in 0.788s

OK

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[qihqi]

thanks!

[qihqi]

Hi @malfet please click the cla/google link in the CI section and fill the form. Thanks!

[malfet]

@qihqi please have another look, force pushed a change that re-authored both commits under non-temp email, otherwise CLA would not pass.

[qihqi]

@malfet looks there is a lint issue.

[malfet]

@qihqi sorry, forgot about 2 spaces, should be done now (I hope CLA does not need to be re-signed right now)

[qihqi]

Merged, sorry about the delay!