fix: set min_rows_per_bundle to None

Signed-off-by: machichima <nary12321@gmail.com>

Author: machichima

python/ray/data/_internal/planner/plan_udf_map_op.py

@@ -197,18 +197,15 @@ def plan_streaming_repartition_op(
 
     if op._strict:
         ref_bundler = StreamingRepartitionRefBundler(op.target_num_rows_per_block)
-        min_rows_per_bundle = None
     else:
         ref_bundler = None
-        min_rows_per_bundle = op.target_num_rows_per_block
 
     operator = MapOperator.create(
         map_transformer,
         input_physical_dag,
         data_context,
         name=op.name,
         compute_strategy=compute,
-        min_rows_per_bundle=min_rows_per_bundle,
         ref_bundler=ref_bundler,
         ray_remote_args=op._ray_remote_args,
         ray_remote_args_fn=op._ray_remote_args_fn,