fix llama (#5856)

colossalai/shardformer/modeling/llama.py

@@ -150,10 +150,8 @@ class LlamaPipelineForwards:
             if shard_config.gradient_checkpoint_config is not None:
                 num_ckpt_layers = shard_config.gradient_checkpoint_config.get_num_ckpt_layers(
                     stage=stage_manager.stage,
-                    num_stages=stage_manager.num_stages,
                     num_layers=end_idx - start_idx,
-                    model_chunk_id=(stage_manager.model_chunk_id if stage_manager.is_interleave else 0),
-                    num_model_chunks=stage_manager.num_model_chunks,
+                    model_chunk_id=stage_manager.model_chunk_id if stage_manager.is_interleave else 0,
                 )
             assert num_ckpt_layers <= end_idx - start_idx