clean write_on_batch_end
This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days. @pzelasko did you have a check to look? <!-- pylint-output-strict-mode-false -->

beep boop 🤖: 🙏 The following files have warnings. In case you are familiar with these, please try helping us to improve the code base.

---

Your code was analyzed with PyLint. The following annotations have been identified:

```
************* Module nemo.collections.asr.data.audio_to_text_dataset
nemo/collections/asr/data/audio_to_text_dataset.py:252:0: C0301: Line too long (148/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:339:0: C0301: Line too long (175/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:433:0: C0301: Line too long (173/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:505:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:556:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:907:0: C0301: Line too long (130/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:919:0: C0301: Line too long (127/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:927:0: C0301: Line too long (125/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:941:0: C0301: Line too long (149/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:953:0: C0301: Line too long (152/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:979:0: C0301: Line too long (126/119) (line-too-long)
nemo/collections/asr/data/audio_to_text_dataset.py:405:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/asr/data/audio_to_text_dataset.py:845:0: C0115: Missing class docstring (missing-class-docstring)
nemo/collections/asr/data/audio_to_text_dataset.py:852:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/asr/data/audio_to_text_dataset.py:891:4: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/asr/data/audio_to_text_dataset.py:896:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/asr/data/audio_to_text_dataset.py:914:0: C0116: Missing function or method docstring (missing-function-docstring)
nemo/collections/asr/data/audio_to_text_dataset.py:945:0: C0116: Missing function or method docstring (missing-function-docstring)

-----------------------------------
Your code has been rated at 9.46/10
```

---

Mitigation guide:

* Add sensible and useful docstrings to functions and methods
* For trivial methods like getter/setters, consider adding `# pylint: disable=C0116` inside the function itself
* To disable multiple functions/methods at once, put a `# pylint: disable=C0116` before the first and a `# pylint: enable=C0116` after the last.

By applying these rules, we reduce the occurance of this message in future.

Thank you for improving NeMo's documentation! This PR is stale because it has been open for 14 days with no activity. Remove stale label or comment or update or this will be closed in 7 days. This PR was closed because it has been inactive for 7 days since being marked as stale.
No need to repeat all the lines
@pzelasko I think relevant to you