Polish dataset card wording

Remove the explicit training-split disclaimer and keep the Parquet description focused on Dataset Viewer visualization.

README.md

@@ -60,7 +60,7 @@ The canonical PKL file stores a list of Python dictionaries. Each sample contain
 | `gt_traj` | `float[N,3]` | Ground-truth trajectory points. |
 | `gt_traj_len` | `float` | Ground-truth trajectory length. |
 
-The Parquet table includes the same structured fields and additional convenience columns such as `sample_index`, `start_x`, `start_y`, `start_z`, `target_x`, `target_y`, `target_z`, and `gt_traj_num_points`. It is provided for browsing and visualization in the Hugging Face Dataset Viewer and should not be interpreted as a training split.
+The Parquet table includes the same structured fields and additional convenience columns such as `sample_index`, `start_x`, `start_y`, `start_z`, `target_x`, `target_y`, `target_z`, and `gt_traj_num_points`. It is provided for browsing and visualization in the Hugging Face Dataset Viewer.
 
 ## Usage