[Tests] Clean up test cases for few models
Author: yaswanth19
Pull request: yes

# What does this PR do?

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Continuation of #38311


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Models:

- text models: @ArthurZucker
- vision models: @amyeroberts, @qubvel
- speech models: @eustlb
- graph models: @clefourrier

Library:

- flax: @gante and @Rocketknight1
- generate: @zucchini-nlp (visual-language models) or @gante (all others)
- pipelines: @Rocketknight1
- tensorflow: @gante and @Rocketknight1
- tokenizers: @ArthurZucker
- trainer: @zach-huggingface and @SunMarc
- chat templates: @Rocketknight1

Integrations:

- deepspeed: HF Trainer/Accelerate: @SunMarc @zach-huggingface
- ray/raytune: @richardliaw, @amogkam
- Big Model Inference: @SunMarc
- quantization (bitsandbytes, autogpt): @SunMarc @MekkCyber

Documentation: @stevhliu

HF projects:

- accelerate: [different repo](https://github.com/huggingface/accelerate)
- datasets: [different repo](https://github.com/huggingface/datasets)
- diffusers: [different repo](https://github.com/huggingface/diffusers)
- rust tokenizers: [different repo](https://github.com/huggingface/tokenizers)

Maintained examples (not research project or legacy):

- Flax: @Rocketknight1
- PyTorch: See Models above and tag the person corresponding to the modality of the example.
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Comments:
@zucchini-nlp Cleaned up tests for qwen models, for emu3 we have to add the step of loading from model repo; which is making the test runs kind of slow (atleast locally 😅 ) hence reverted that change.

The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/transformers/pr_38315). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

I ran the tests locally and tests were passing/skipped for images, videos and commons ones similarly with and without this PR changes.

(for @zucchini-nlp : we can use `run-slow: xxx`, but it might be a bit frustrating if we already have some tests failing on `main` and not very handy to compare - I will try to improve this part )

@ydshieh you mean for processing tests?

I probably misunderstand your previous comment:

> LGTM, can you make sure the tests are all green for models

I though you are asking the whole tests for changed models (including slow ones).

If you only mean for the processing tests, ignore my comment above 🙏