Delete legacy JSON metadata

Delete legacy `dataset_infos.json`.

dataset_infos.json

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-{"default": {"description": "CodeXGLUE text-to-code dataset, available at https://github.com/microsoft/CodeXGLUE/tree/main/Text-Code/text-to-code\n\nWe use concode dataset which is a widely used code generation dataset from Iyer's EMNLP 2018 paper Mapping Language to Code in Programmatic Context. See paper for details.", "citation": "@article{iyer2018mapping,\ntitle={Mapping language to code in programmatic context},\nauthor={Iyer, Srinivasan and Konstas, Ioannis and Cheung, Alvin and Zettlemoyer, Luke},\njournal={arXiv preprint arXiv:1808.09588},\nyear={2018}\n}", "homepage": "https://github.com/madlag/CodeXGLUE/tree/main/Text-Code/text-to-code", "license": "", "features": {"id": {"dtype": "int32", "id": null, "_type": "Value"}, "nl": {"dtype": "string", "id": null, "_type": "Value"}, "code": {"dtype": "string", "id": null, "_type": "Value"}}, "post_processed": null, "supervised_keys": {"input": "code", "output": ""}, "task_templates": null, "builder_name": "code_x_glue_tc_text_to_code", "config_name": "default", "version": {"version_str": "0.0.0", "description": null, "major": 0, "minor": 0, "patch": 0}, "splits": {"train": {"name": "train", "num_bytes": 96225611, "num_examples": 100000, "dataset_name": "code_x_glue_tc_text_to_code"}, "validation": {"name": "validation", "num_bytes": 1749751, "num_examples": 2000, "dataset_name": "code_x_glue_tc_text_to_code"}, "test": {"name": "test", "num_bytes": 1609306, "num_examples": 2000, "dataset_name": "code_x_glue_tc_text_to_code"}}, "download_checksums": {"https://raw.githubusercontent.com/madlag/CodeXGLUE/main/Text-Code/text-to-code/dataset/concode/train.json": {"num_bytes": 97365680, "checksum": "a130f375c415932ffe0188e76b3c8aaef92b1b52d228e342328657b9ae97f17f"}, "https://raw.githubusercontent.com/madlag/CodeXGLUE/main/Text-Code/text-to-code/dataset/concode/dev.json": {"num_bytes": 1772646, "checksum": "cd4f91cfaa12a886a1d7acaf92eaf8ab066845c37a9221e56634d345958c922a"}, "https://raw.githubusercontent.com/madlag/CodeXGLUE/main/Text-Code/text-to-code/dataset/concode/test.json": {"num_bytes": 1631312, "checksum": "3323b1d723c2183a0ef4693413d25ef5a6b988b50b37b2f401de6c2c5c55159f"}}, "download_size": 100769638, "post_processing_size": null, "dataset_size": 99584668, "size_in_bytes": 200354306}}