Remove `pytest_options={"rA": None}` in CI
# What does this PR do?

This option causes the (TF/Flax) jobs to spend 6-8 minutes (for a full set run) to prepare something for reporting after the actual tests are finished.

Taking [this TF job (nightly run)](https://app.circleci.com/pipelines/github/huggingface/transformers/69562/workflows/8fd9db08-9730-4d57-90b5-660c8a48a55c/jobs/872686/steps) for example, we can see the situation in the following screenshot

<img width="1044" alt="Screenshot 2023-08-02 132209" src="https://github.com/huggingface/transformers/assets/2521628/67e6bc89-d0d3-4d6a-9090-f3e1042be639">


Note that the torch job doesn't have this option, as it is removed ~ 3 years ago by Stas in #7995. Also, we still have all the reports we need in the artifact tab. (I don't remember the details about `-rA` though - Stas is the expert of this)
_The documentation is not available anymore as the PR was closed or merged._<|||||>
> For reference, I think `-rA` generates a [detailed summary report for all groups](https://docs.pytest.org/en/6.2.x/usage.html#detailed-summary-report).

Oh yes, my memory mixed the `--make-reports` and `-rA` things. Thanks!
<|||||>> As it was removed for the torch job a long time ago, I'm happy for it to be removed here :)

If you were not happy, we will have to spend more🤑 on CircleCI credits 💸 😆 (and for nothing)

