gh-104773: PEP 594: Remove the sndhdr module (#104774)

Remove the Lib/test/sndhdrdata/ directory.

Author: vstinner

.gitattributes

@@ -18,7 +18,6 @@
 *.zip binary
 
 # Specific binary files
-Lib/test/sndhdrdata/sndhdr.* binary
 PC/classicAppCompat.* binary
 
 # Text files that should not be subject to eol conversion

Doc/library/sndhdr.rst

@@ -22,7 +22,6 @@ backwards compatibility. They have been superseded by other modules.
    optparse.rst
    ossaudiodev.rst
    pipes.rst
-   sndhdr.rst
    spwd.rst
    sunau.rst
    uu.rst

Doc/library/superseded.rst

@@ -1733,7 +1733,7 @@ Modules
   +---------------------+---------------------+---------------------+---------------------+---------------------+
   | :mod:`aifc`         | :mod:`chunk`        | :mod:`msilib`       | :mod:`pipes`        | :mod:`!telnetlib`   |
   +---------------------+---------------------+---------------------+---------------------+---------------------+
-  | :mod:`audioop`      | :mod:`crypt`        | :mod:`nis`          | :mod:`sndhdr`       | :mod:`uu`           |
+  | :mod:`audioop`      | :mod:`crypt`        | :mod:`nis`          | :mod:`!sndhdr`      | :mod:`uu`           |
   +---------------------+---------------------+---------------------+---------------------+---------------------+
   | :mod:`!cgi`         | :mod:`imghdr`       | :mod:`nntplib`      | :mod:`spwd`         | :mod:`xdrlib`       |
   +---------------------+---------------------+---------------------+---------------------+---------------------+

Doc/whatsnew/3.11.rst

@@ -816,7 +816,7 @@ Modules (see :pep:`594`):
 * :mod:`nntplib`
 * :mod:`ossaudiodev`
 * :mod:`pipes`
-* :mod:`sndhdr`
+* :mod:`!sndhdr`
 * :mod:`spwd`
 * :mod:`sunau`
 * :mod:`!telnetlib`

Doc/whatsnew/3.12.rst

@@ -147,6 +147,12 @@ Removed
 
   (Contributed by Victor Stinner in :gh:`104773`.)
 
+* :pep:`594`: Remove the :mod:`!sndhdr` module, deprecated in Python 3.11: use
+  the projects `filetype <https://pypi.org/project/filetype/>`_, `puremagic
+  <https://pypi.org/project/puremagic/>`_, or `python-magic
+  <https://pypi.org/project/python-magic/>`_ instead.
+  (Contributed by Victor Stinner in :gh:`104773`.)
+
 
 Porting to Python 3.13
 ======================