Update configuration_opt.py

configuration_opt.py

@@ -111,7 +111,6 @@ class OPTConfig(PretrainedConfig):
         eos_token_id=2,
         enable_bias=True,
         layer_norm_elementwise_affine=True,
-        attn_implementation='eager',
         **kwargs,
     ):
         super().__init__(
@@ -142,4 +141,3 @@ class OPTConfig(PretrainedConfig):
         # with checkpoints that have been fine-tuned before transformers v4.20.1
         # see https://github.com/facebookresearch/metaseq/pull/164
         self._remove_final_layer_norm = _remove_final_layer_norm
-        self.attn_implementation = attn_implementation