Card: drop visibility line (managed via repo setting)

README.md

@@ -12,7 +12,7 @@ LTL-safety-checked demos, converted to **LeRobot v2.1**.
 
 - **Creator:** yypeng666 (IDEAS-Lab-Northwestern)
 - **Source bench:** [IDEAS-Lab-Northwestern/ManiGuard-Bench](https://huggingface.co/datasets/IDEAS-Lab-Northwestern/ManiGuard-Bench) — all 28 `stack_retrieve` base tasks.
-- **Per task:** 40 success + LTL-safe trajectories → **1120 episodes**. Visibility: public.
+- **Per task:** 40 success + LTL-safe trajectories → **1120 episodes**.
 
 ## Contents
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