Update pytorch_model.bin.index.json

pytorch_model.bin.index.json

@@ -437,7 +437,6 @@
     "encoder.layers.9.self_att.self_attention.project_v.weight": "pytorch_model-00003-of-00013.bin",
     "encoder.output_layernorm.weight": "pytorch_model-00013-of-00013.bin",
     "input_embedding.weight": "pytorch_model-00013-of-00013.bin",
-    "lm_head.weight": "pytorch_model-00013-of-00013.bin",
     "position_bias.relative_attention_bias": "pytorch_model-00013-of-00013.bin",
     "segment_embedding.weight": "pytorch_model-00013-of-00013.bin"
   }