Fix TF savedmodel in Roberta (#7795)

* Remove wrong parameter.

* Same in Longformer

src/transformers/modeling_tf_longformer.py

@@ -125,7 +125,7 @@ class TFLongformerEmbeddings(tf.keras.layers.Layer):
     """
 
     def __init__(self, config, **kwargs):
-        super().__init__(config, **kwargs)
+        super().__init__(**kwargs)
 
         self.padding_idx = 1
         self.vocab_size = config.vocab_size

src/transformers/modeling_tf_roberta.py

@@ -70,7 +70,7 @@ class TFRobertaEmbeddings(tf.keras.layers.Layer):
     """
 
     def __init__(self, config, **kwargs):
-        super().__init__(config, **kwargs)
+        super().__init__(**kwargs)
 
         self.padding_idx = 1
         self.vocab_size = config.vocab_size