remove warning v2 (huggingface#33761)

src/transformers/tokenization_utils_base.py

@@ -1613,14 +1613,6 @@ def __init__(self, **kwargs):
 
         self.model_input_names = kwargs.pop("model_input_names", self.model_input_names)
 
-        if "clean_up_tokenization_spaces" not in kwargs:
-            warnings.warn(
-                "`clean_up_tokenization_spaces` was not set. It will be set to `True` by default. This "
-                "behavior will be deprecated in transformers v4.45, and will be then set to `False` by default. "
-                "For more details check this issue: https://github.com/huggingface/transformers/issues/31884",
-                FutureWarning,
-            )
-
         # By default, cleaning tokenization spaces for both fast and slow tokenizers
         self.clean_up_tokenization_spaces = kwargs.pop("clean_up_tokenization_spaces", False)