Remove unused parameter from create_pick_skill function

Author: yichao-liang

predicators/ground_truth_models/skill_factories/pick.py

@@ -111,6 +111,7 @@ def _above_pose(
         params: Array,
         cfg: SkillConfig,
     ) -> Tuple[float, float, float, float]:
+        del params
         x, y, _, yaw = get_target_pose_fn(state, objects, _empty, cfg)
         return x, y, cfg.transport_z, yaw