Delete legacy JSON metadata

Delete legacy `dataset_infos.json`.

dataset_infos.json

@@ -1 +0,0 @@
-{"en": {"description": "\nClean-up text for 40+ Wikipedia languages editions of pages\ncorrespond to entities. The datasets have train/dev/test splits per language.\nThe dataset is cleaned up by page filtering to remove disambiguation pages,\nredirect pages, deleted pages, and non-entity pages. Each example contains the\nwikidata id of the entity, and the full Wikipedia article after page processing\nthat removes non-content sections and structured objects.\n", "citation": "\n", "homepage": "https://research.google/pubs/pub49029/", "license": "", "features": {"wikidata_id": {"dtype": "string", "id": null, "_type": "Value"}, "text": {"dtype": "string", "id": null, "_type": "Value"}, "version_id": {"dtype": "string", "id": null, "_type": "Value"}}, "supervised_keys": null, "builder_name": "wiki40b", "config_name": "en", "version": {"version_str": "1.1.0", "description": null, "datasets_version_to_prepare": null, "major": 1, "minor": 1, "patch": 0}, "splits": {"train": {"name": "train", "num_bytes": 9423623904, "num_examples": 2926536, "dataset_name": "wiki40b"}, "validation": {"name": "validation", "num_bytes": 527383016, "num_examples": 163597, "dataset_name": "wiki40b"}, "test": {"name": "test", "num_bytes": 522219464, "num_examples": 162274, "dataset_name": "wiki40b"}}, "download_checksums": {}, "download_size": 0, "dataset_size": 10473226384, "size_in_bytes": 10473226384}}