Fix bug in Wav2Vec2 pretrain example
Author: ddobokki
Pull request: yes

# What does this PR do?

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I fix a minor bug in [run_pretrain.py](https://github.com/huggingface/transformers/tree/main/examples/research_projects/wav2vec2/run_pretrain.py)
DataCollatorForWav2Vec2Pretraining in this script call **_compute_mask_indices** method, but give to wrong parameter(device)
so i edit from
```python
batch["mask_time_indices"] = _compute_mask_indices(
            (batch_size, mask_indices_seq_length),
            self.model.config.mask_time_prob,
            self.model.config.mask_time_length,
            device=batch["input_values"].device,
            attention_mask=attention_mask,
            min_masks=2,
        )
```
to
```python
batch["mask_time_indices"] = _compute_mask_indices(
            (batch_size, mask_indices_seq_length),
            self.model.config.mask_time_prob,
            self.model.config.mask_time_length,
            attention_mask=attention_mask,
            min_masks=2,
        )
```

Fixes #17323


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Comments:
_The documentation is not available anymore as the PR was closed or merged._

Thanks!