unwanted changes from 2.0.0.rst reversed

Author: ShisuiUzumaki

doc/source/whatsnew/v2.0.0.rst

@@ -507,7 +507,7 @@ Other API changes
 
 Deprecations
 ~~~~~~~~~~~~
-
+- Deprecated argument ``infer_datetime_format`` in :func:`to_datetime` and :func:`read_csv`, as a strict version of it is now the default (:issue:`48621`)
 - :meth:`Index.is_categorical` has been deprecated. Use :func:`pandas.api.types.is_categorical_dtype` instead (:issue:`50042`)
 
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