open_llama tokenization modules import
### System Info

I stumbled upon this issue, which is not an issue with the OpenLLaMa implementation; I did not try to use OpenLLaMA. 
I am importing `transformers.pipeline` in a project including tests using [freezegun](https://github.com/spulec/freezegun) to freeze dates. It seems like freezegun recursively checks all imports of all imported modules, and I am getting the following error:

 `ModuleNotFoundError: No module named 'transformers.models.open_llama.tokenization_open_llama'`
and the same for `transformers.models.open_llama.tokenization_open_llama_fast`.

This is probably just an import error, since it seems that open_llama uses `LlamaTokenizer` and `LlamaTokenizerFast`; creating stubs for `transformers.models.open_llama.tokenization_open_llama` and `transformers.models.open_llama.tokenization_open_llama_fast` seems to solve the import issue and tests run just fine.

### Who can help?

@s-JoL 

### Information

- [ ] The official example scripts
- [X] My own modified scripts

### Tasks

- [ ] An officially supported task in the `examples` folder (such as GLUE/SQuAD, ...)
- [X] My own task or dataset (give details below)

### Reproduction

Minimal code to reproduce:

```
from freezegun import freeze_time

@freeze_time('2022-01-01 12:01:00')
def test_a():
    from transformers import pipeline
```

### Expected behavior

no import errors
There is not a single line in the library trying that import, so it looks like an issue on `freezegun` more than on Transformers.<|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md) are likely to be ignored.<|||||>Just hit this issue too with `freezegun`

<img width="1899" alt="image" src="https://github.com/huggingface/transformers/assets/4619775/a2149e8a-19ac-493f-8284-c26109621b88">
<|||||>While this might be an issue with how freezegun loads dependencies, `freezegun` did not come up with those names: `transformers.models.open_llama.tokenization_open_llama`, `transformers.models.open_llama.tokenization_open_llama_fast`. They are referenced [here](https://github.com/huggingface/transformers/blob/2bd7a27a671fd1d98059124024f580f8f5c0f3b5/src/transformers/models/deprecated/open_llama/__init__.py#L35).

The temporary workaround I used is to create stubs for them using [surrogate](https://github.com/ikostia/surrogate) like this:
```
def pytest_sessionstart(session):
    @surrogate('transformers.models.open_llama.tokenization_open_llama')
    @surrogate('transformers.models.open_llama.tokenization_open_llama_fast')
    def freezegun_initial_import():
        pass
    freezegun_initial_import()
```<|||||>@npapasarantopoulos The link you show gives the name `tokenization_open_llama` defined in `transformers.models.deprecated.open_llama`, so it does seem like `freezegun` is making those names up.