Kill model archive maps (#4636)

* Kill model archive maps

* Fixup

* Also kill model_archive_map for MaskedBertPreTrainedModel

* Unhook config_archive_map

* Tokenizers: align with model id changes

* make style && make quality

* Fix CI

tests/test_modeling_xlnet.py

@@ -35,7 +35,7 @@ if is_torch_available():
         XLNetForTokenClassification,
         XLNetForQuestionAnswering,
     )
-    from transformers.modeling_xlnet import XLNET_PRETRAINED_MODEL_ARCHIVE_MAP
+    from transformers.modeling_xlnet import XLNET_PRETRAINED_MODEL_ARCHIVE_LIST
 
 
 @require_torch
@@ -508,7 +508,7 @@ class XLNetModelTest(ModelTesterMixin, unittest.TestCase):
 
     @slow
     def test_model_from_pretrained(self):
-        for model_name in list(XLNET_PRETRAINED_MODEL_ARCHIVE_MAP.keys())[:1]:
+        for model_name in XLNET_PRETRAINED_MODEL_ARCHIVE_LIST[:1]:
             model = XLNetModel.from_pretrained(model_name)
             self.assertIsNotNone(model)