Revert accidental changes to README.rst

Author: shuoweil

README.rst

@@ -110,19 +110,6 @@ For details, see the `third_party
 directory.
 
 
-Display Enhancements
---------------------
-
-**DataFrame `_repr_html_()` and `_ipython_display_()` Integration**
-
-The `bigframes.pandas.DataFrame._repr_html_()` method has been updated. When `bpd.options.display.repr_mode` is set to “anywidget”, it will:
-
-*   Wrap the import of `anywidget` in a `try...except ImportError` block. If the dependency is not found, it will issue a `warnings.warn` message and fall back to returning the deferred representation.
-*   If the import is successful, it instantiates a new `TableWidget`, passing the DataFrame's data.
-*   Return the widget instance, which Jupyter automatically renders. A new widget instance is created for each `_repr_html_()` call to ensure cell outputs are isolated.
-
-A new `_ipython_display_()` method has been introduced to handle the actual widget rendering, separating concerns from `_repr_html_()`.
-
 Contact Us
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