Cleanup reference to TFBertTokenizer

Author: Rocketknight1

src/transformers/models/bert/__init__.py

@@ -22,7 +22,6 @@
     from .modeling_bert import *
     from .tokenization_bert import *
     from .tokenization_bert_fast import *
-    from .tokenization_bert_tf import *
 else:
     import sys
 

utils/check_docstrings.py

@@ -111,7 +111,6 @@ class DecoratedItem:
     "InputFeatures",
     # Signature is *args/**kwargs
     "TFSequenceSummary",
-    "TFBertTokenizer",
     "TFGPT2Tokenizer",
     # Missing arguments in the docstring
     "ASTFeatureExtractor",