Deleted the 'maybe_free_model_hooks()' from Diffusers Pipelines

[Cerrix]

As described in: #327 issue the maybe_free_model_hooks() present in the following 3 pipelines:

• optimum/neuron/pipelines/diffusers/pipeline_stable_diffusion_inpaint.py:392
• optimum/neuron/pipelines/diffusers/pipeline_stable_diffusion_x|_img2img.py:510
• optimum/neuron/pipelines/diffusers/pipeline_stable_diffusion_x|_inpaint.py:568

is removed.
This will allow the pipelines to work as expected.

[Cerrix]

@JingyaHuang here the PR 😄

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint.

[JingyaHuang]

LGTM, thanks again for reporting the issue and contributing! Let's wait a bit for the inf2 CI to complete before merging.

[Cerrix]

Yep! But it failed 🥲 I don’t understand why, it does not seem related to my commit

[JingyaHuang]

@Cerrix No worries, it failed because of some access issues.

It seems that after the refactoring of CIs, PRs from contributors not in the org won't have access to HF_TOKEN_OPTIMUM_NEURON_CI leading to the failure of some tests on hub integration. Do you know why? @dacorvo, the easiest workaround will be just add decorators like requires_hf_token on those tests. But it would be better if we can have contributors's PRs run those tests as well.

cc. @michaelbenayoun

[michaelbenayoun]

Yes, seeing the same thing for #332. Let's discuss it offline on how we could address this.

[JingyaHuang]

I will merge this PR as failed tests are irrelevant and I would like to have it in today's release. cc. @dacorvo @michaelbenayoun