Remove set_access_token usage + fail tests if FutureWarning (#22051)

* Remove set_access_token usage + fail tests if FutureWarning

* do not fail on FutureWarning in CI

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Co-authored-by: testbot <lucainp@hf.co>

tests/test_modeling_flax_common.py

@@ -21,7 +21,7 @@ import unittest
 from typing import List, Tuple
 
 import numpy as np
-from huggingface_hub import HfFolder, delete_repo, set_access_token
+from huggingface_hub import HfFolder, delete_repo
 from requests.exceptions import HTTPError
 
 import transformers
@@ -1173,7 +1173,6 @@ class FlaxModelPushToHubTester(unittest.TestCase):
     @classmethod
     def setUpClass(cls):
         cls._token = TOKEN
-        set_access_token(TOKEN)
         HfFolder.save_token(TOKEN)
 
     @classmethod