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

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

@@ -1,3 +1,11 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:50e40e4c2bb523fca0b54e9a9635281312e9c6f9d757db03c06a0865c5508f29
-size 188
+{
+    "codebase_version": "v1.6",
+    "fps": 50,
+    "video": true,
+    "encoding": {
+        "vcodec": "libsvtav1",
+        "pix_fmt": "yuv420p",
+        "g": 2,
+        "crf": 30
+    }
+}

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

@@ -1,3 +1,61 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:8b7fbedfdb3d536847bc6fadf2cbabb9f2b5492edf3e2c274a3e8ffb447105e8
-size 1166
+{
+  "citation": "",
+  "description": "",
+  "features": {
+    "observation.images.cam_high": {
+      "_type": "VideoFrame"
+    },
+    "observation.images.cam_left_wrist": {
+      "_type": "VideoFrame"
+    },
+    "observation.images.cam_right_wrist": {
+      "_type": "VideoFrame"
+    },
+    "observation.state": {
+      "feature": {
+        "dtype": "float32",
+        "_type": "Value"
+      },
+      "length": 14,
+      "_type": "Sequence"
+    },
+    "observation.effort": {
+      "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_mobile_elevator/train/state.json

@@ -1,3 +1,13 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d394d451929b805f2d94f9fc5b12d15c31cfc494df76d7d642b63378b8ba0131
-size 247
+{
+  "_data_files": [
+    {
+      "filename": "data-00000-of-00001.arrow"
+    }
+  ],
+  "_fingerprint": "ba1d9dc6ea5a9717",
+  "_format_columns": null,
+  "_format_kwargs": {},
+  "_format_type": null,
+  "_output_all_columns": false,
+  "_split": null
+}