Remove a redundant line because it is the same as line 242.

PiperOrigin-RevId: 358301569

official/nlp/modeling/networks/encoder_scaffold.py

@@ -243,7 +243,6 @@ class EncoderScaffold(tf.keras.Model):
     self._position_embedding_layer = position_embedding_layer
     self._type_embedding_layer = type_embedding_layer
     self._embedding_norm_layer = embedding_norm_layer
-    self._embedding_network = embedding_network
     self._hidden_layers = hidden_layers
     if self._layer_norm_before_pooling:
       self._output_layer_norm = output_layer_norm