Fix nightlies & untrack json files from git lfs (#414)

tests/data/lerobot/aloha_sim_insertion_scripted_image/meta_data/info.json

@@ -1,3 +1,5 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e7ab5c2bd7d176d4d7902a600240318c2828b7d75f4a888d0887327e4eff089d
-size 65
+{
+    "codebase_version": "v1.6",
+    "fps": 50,
+    "video": 0
+}

tests/data/lerobot/aloha_sim_insertion_scripted_image/train/dataset_info.json

@@ -1,3 +1,47 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4c9545525dc1f4d550591bd5efb63b55c15b983ae0510fefda5a16d77c78b6ef
-size 837
+{
+  "citation": "",
+  "description": "",
+  "features": {
+    "observation.images.top": {
+      "_type": "Image"
+    },
+    "observation.state": {
+      "feature": {
+        "dtype": "float32",
+        "_type": "Value"
+      },
+      "length": 14,
+      "_type": "Sequence"
+    },
+    "action": {
+      "feature": {
+        "dtype": "float32",
+        "_type": "Value"
+      },
+      "length": 14,
+      "_type": "Sequence"
+    },
+    "episode_index": {
+      "dtype": "int64",
+      "_type": "Value"
+    },
+    "frame_index": {
+      "dtype": "int64",
+      "_type": "Value"
+    },
+    "timestamp": {
+      "dtype": "float32",
+      "_type": "Value"
+    },
+    "next.done": {
+      "dtype": "bool",
+      "_type": "Value"
+    },
+    "index": {
+      "dtype": "int64",
+      "_type": "Value"
+    }
+  },
+  "homepage": "",
+  "license": ""
+}

tests/data/lerobot/aloha_sim_insertion_scripted_image/train/state.json

@@ -1,3 +1,13 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:752660d8fd884b33b7302a4a42ec7c680de2a3e5022d7d007586f4c6337ce08a
-size 247
+{
+  "_data_files": [
+    {
+      "filename": "data-00000-of-00001.arrow"
+    }
+  ],
+  "_fingerprint": "9be74ce70441e055",
+  "_format_columns": null,
+  "_format_kwargs": {},
+  "_format_type": null,
+  "_output_all_columns": false,
+  "_split": null
+}