Use Python 3.9 syntax in tests (#37343)

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

tests/models/xglm/test_modeling_flax_xglm.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");
@@ -132,7 +131,7 @@ class FlaxXGLMModelTester:
 
         outputs = model(input_ids)
 
-        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, input_ids, attention_mask):
@@ -164,7 +163,7 @@ class FlaxXGLMModelTester:
         )
 
         outputs = model(input_ids, attention_mask=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/xglm/test_modeling_tf_xglm.py

@@ -1,4 +1,3 @@
-# coding=utf-8
 # Copyright 2022 The HuggingFace Team. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

tests/models/xglm/test_modeling_xglm.py

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

tests/models/xglm/test_tokenization_xglm.py

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