fix bugs

tensor2tensor/models/transformer_dla.py

@@ -467,5 +467,3 @@ def transformer_dla_base25_shared():
   hparams.shared_decoder_input_and_softmax_weights = int(True)
   hparams.encoder_layers = 25
   return hparams
\ No newline at end of file
-
-  return hparams
\ No newline at end of file