Delete legacy JSON metadata

Delete legacy `dataset_infos.json`.

dataset_infos.json

@@ -1 +0,0 @@
-{"fi-sv": {"description": "The Finlex Data Base is a comprehensive collection of legislative and other judicial information of Finland, which is available in Finnish, Swedish and partially in English. This corpus is taken from the Semantic Finlex serice that provides the Finnish and Swedish data as linked open data and also raw XML files.", "citation": "J. Tiedemann, 2012, Parallel Data, Tools and Interfaces in OPUS. In Proceedings of the 8th International Conference on Language Resources and Evaluation (LREC 2012)", "homepage": "http://opus.nlpl.eu/Finlex.php", "license": "", "features": {"translation": {"languages": ["fi", "sv"], "id": null, "_type": "Translation"}}, "post_processed": null, "supervised_keys": null, "builder_name": "opus_finlex", "config_name": "fi-sv", "version": {"version_str": "1.0.0", "description": null, "major": 1, "minor": 0, "patch": 0}, "splits": {"train": {"name": "train", "num_bytes": 610550215, "num_examples": 3114141, "dataset_name": "opus_finlex"}}, "download_checksums": {"https://object.pouta.csc.fi/OPUS-Finlex/v2018/moses/fi-sv.txt.zip": {"num_bytes": 153886554, "checksum": "38c28159c1bddf0108e911d35c5faef8560f2824c8975d80d85431bcdc42fc1c"}}, "download_size": 153886554, "post_processing_size": null, "dataset_size": 610550215, "size_in_bytes": 764436769}}