Use Python 3.9 syntax in tests (#37343)

Signed-off-by: cyy <cyyever@outlook.com>

tests/models/blenderbot/test_modeling_blenderbot.py

@@ -1,4 +1,3 @@
-# coding=utf-8
 # Copyright 2021, The HuggingFace Inc. team. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

tests/models/blenderbot/test_modeling_flax_blenderbot.py

@@ -179,7 +179,7 @@ class FlaxBlenderbotModelTester:
 
         outputs = model.decode(decoder_input_ids, encoder_outputs)
 
-        diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])))
+        diff = np.max(np.abs(outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))
         self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}")
 
     def check_use_cache_forward_with_attn_mask(self, model_class_name, config, inputs_dict):
@@ -225,7 +225,7 @@ class FlaxBlenderbotModelTester:
 
         outputs = model.decode(decoder_input_ids, encoder_outputs, decoder_attention_mask=decoder_attention_mask)
 
-        diff = np.max(np.abs((outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5])))
+        diff = np.max(np.abs(outputs_cache_next[0][:, -1, :5] - outputs[0][:, -1, :5]))
         self.parent.assertTrue(diff < 1e-3, msg=f"Max diff is {diff}")
 
 

tests/models/blenderbot/test_modeling_tf_blenderbot.py

@@ -1,4 +1,3 @@
-# coding=utf-8
 # Copyright 2021 The HuggingFace Inc. team. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

tests/models/blenderbot/test_tokenization_blenderbot.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# coding=utf-8
 # Copyright 2020 The HuggingFace Team. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");