Revert "fix init weights issue for critic/reward model (#983)"

This reverts commit 3d83278.

Author: hwchen2017

applications/DeepSpeed-Chat/dschat/utils/model/model_utils.py

@@ -11,7 +11,6 @@
 )
 from huggingface_hub import snapshot_download
 from transformers.integrations.deepspeed import HfDeepSpeedConfig
-from transformers.modeling_utils import no_init_weights
 
 from dschat.utils.model.reward_model import RewardModel
 from dschat.utils.utils import load_state_dict_into_model, print_rank_0
@@ -100,8 +99,7 @@ def create_hf_model(model_class,
         dschf = None
     if rlhf_training:
         # the weight loading is handled by create critic model
-        with no_init_weights():
-            model = model_class.from_config(model_config)
+        model = model_class.from_config(model_config)
     else:
         model = model_class.from_pretrained(
             model_name_or_path,