Fixing double `use_auth_token.pop` (preventing private models from being visible).
Author: Narsil
Pull request: yes

# What does this PR do?

Should fix: https://github.com/huggingface/transformers/issues/14334#issuecomment-1634527833

Repro: Have a private repo, with `vocab.json` (spread out files for the
tokenizer) and use `AutoTokenizer.from_pretrained(...,
use_auth_token="token")`.

Not sure if we already have private visibility tests to maybe add/fix some so we can detect this in our suite.



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Fixes # (issue)


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Models:

- text models: @ArthurZucker and @younesbelkada
- vision models: @amyeroberts
- speech models: @sanchit-gandhi
- graph models: @clefourrier

Library:

- flax: @sanchit-gandhi
- generate: @gante
- pipelines: @Narsil
- tensorflow: @gante and @Rocketknight1
- tokenizers: @ArthurZucker
- trainer: @sgugger

Integrations:

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- ray/raytune: @richardliaw, @amogkam

Documentation: @sgugger, @stevhliu and @MKhalusova

HF projects:

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- datasets: [different repo](https://github.com/huggingface/datasets)
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Comments:
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