Remove warning and defusedxml

Author: vstinner

Doc/library/xml.rst

@@ -15,13 +15,6 @@ XML Processing Modules
 
 Python's interfaces for processing XML are grouped in the ``xml`` package.
 
-.. warning::
-
-   The XML modules are not secure against erroneous or maliciously
-   constructed data.  If you need to parse untrusted or
-   unauthenticated data see the :ref:`xml-vulnerabilities` and
-   :ref:`defusedxml-package` sections.
-
 It is important to note that modules in the :mod:`xml` package require that
 there be at least one SAX-compliant XML parser available. The Expat parser is
 included with Python, so the :mod:`xml.parsers.expat` module will always be
@@ -126,21 +119,6 @@ large tokens
   be used to cause denial of service in the application parsing XML.
   The issue is known as :cve:`2023-52425`.
 
-The documentation for :pypi:`defusedxml` on PyPI has further information about
-all known attack vectors with examples and references.
-
-.. _defusedxml-package:
-
-The :mod:`!defusedxml` Package
-------------------------------
-
-:pypi:`defusedxml` is a pure Python package with modified subclasses of all stdlib
-XML parsers that prevent any potentially malicious operation. Use of this
-package is recommended for any server code that parses untrusted XML data. The
-package also ships with example exploits and extended documentation on more
-XML exploits such as XPath injection.
-
-
 .. _Billion Laughs: https://en.wikipedia.org/wiki/Billion_laughs
 .. _ZIP bomb: https://en.wikipedia.org/wiki/Zip_bomb
 .. _DTD: https://en.wikipedia.org/wiki/Document_type_definition