Delete legacy JSON metadata

dataset_infos.json

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-{"default": {"description": "The Sogou News dataset is a mixture of 2,909,551 news articles from the SogouCA and SogouCS news corpora, in 5 categories. \nThe number of training samples selected for each class is 90,000 and testing 12,000. Note that the Chinese characters have been converted to Pinyin.\nclassification labels of the news are determined by their domain names in the URL. For example, the news with\nURL http://sports.sohu.com is categorized as a sport class.\n", "citation": "@misc{zhang2015characterlevel,\n    title={Character-level Convolutional Networks for Text Classification},\n    author={Xiang Zhang and Junbo Zhao and Yann LeCun},\n    year={2015},\n    eprint={1509.01626},\n    archivePrefix={arXiv},\n    primaryClass={cs.LG}\n}\n", "homepage": "", "license": "", "features": {"title": {"dtype": "string", "id": null, "_type": "Value"}, "content": {"dtype": "string", "id": null, "_type": "Value"}, "label": {"num_classes": 5, "names": ["sports", "finance", "entertainment", "automobile", "technology"], "names_file": null, "id": null, "_type": "ClassLabel"}}, "supervised_keys": null, "builder_name": "sogou__news", "config_name": "default", "version": {"version_str": "0.0.0", "description": null, "datasets_version_to_prepare": null, "major": 0, "minor": 0, "patch": 0}, "splits": {"test": {"name": "test", "num_bytes": 168645860, "num_examples": 60000, "dataset_name": "sogou__news"}, "train": {"name": "train", "num_bytes": 1257931136, "num_examples": 450000, "dataset_name": "sogou__news"}}, "download_checksums": {"https://s3.amazonaws.com/fast-ai-nlp/sogou_news_csv.tgz": {"num_bytes": 384269937, "checksum": "6b77fc935561d339b82aa552d7e31ea59eff492a494920579b3ce70604efb5c2"}}, "download_size": 384269937, "dataset_size": 1426576996, "size_in_bytes": 1810846933}}