Delete legacy JSON metadata

Delete legacy `dataset_infos.json`.

dataset_infos.json

@@ -1 +0,0 @@
-{"plain_text": {"description": "This dataset contains over 63,000 book reviews in Arabic.It is the largest sentiment analysis dataset for Arabic to-date.The book reviews were harvested from the website Goodreads during the month or March 2013.Each book review comes with the goodreads review id, the user id, the book id, the rating (1 to 5) and the text of the review.\n", "citation": "@inproceedings{aly2013labr,\n  title={Labr: A large scale arabic book reviews dataset},\n  author={Aly, Mohamed and Atiya, Amir},\n  booktitle={Proceedings of the 51st Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)},\n  pages={494--498},\n  year={2013}\n}\n", "homepage": "https://github.com/mohamedadaly/LABR", "license": "", "features": {"text": {"dtype": "string", "id": null, "_type": "Value"}, "label": {"num_classes": 5, "names": ["1", "2", "3", "4", "5"], "names_file": null, "id": null, "_type": "ClassLabel"}}, "post_processed": null, "supervised_keys": null, "task_templates": [{"task": "text-classification", "text_column": "text", "label_column": "label", "labels": ["1", "2", "3", "4", "5"]}], "builder_name": "labr", "config_name": "plain_text", "version": {"version_str": "1.0.0", "description": "", "major": 1, "minor": 0, "patch": 0}, "splits": {"train": {"name": "train", "num_bytes": 7051103, "num_examples": 11760, "dataset_name": "labr"}, "test": {"name": "test", "num_bytes": 1703399, "num_examples": 2935, "dataset_name": "labr"}}, "download_checksums": {"https://raw.githubusercontent.com/mohamedadaly/LABR/master/data/5class-balanced-train.txt": {"num_bytes": 80515, "checksum": "389473fb7e673f60b42d0a8f1c6478f0930a61ae0a069f7b83c6ea670fe8171d"}, "https://raw.githubusercontent.com/mohamedadaly/LABR/master/data/5class-balanced-test.txt": {"num_bytes": 20067, "checksum": "0ca1ef7d5c286514defe6d45d1d72696bfdd169364b0d69d1f02beb9fbfe89cf"}, "https://raw.githubusercontent.com/mohamedadaly/LABR/master/data/reviews.tsv": {"num_bytes": 39853130, "checksum": "a72f1b8ece766c918dfdb3c31c2a2da4f408dd2f69a24aef5187c85f313edb04"}}, "download_size": 39953712, "post_processing_size": null, "dataset_size": 8754502, "size_in_bytes": 48708214}}