gh-97681: Remove Tools/demo/ directory (#97682)

Remove the Tools/demo/ directory which contained old demo scripts. A
copy can be found in the old-demos project:
https://github.com/gvanrossum/old-demos

Remove the following old demo scripts:

* beer.py
* eiffel.py
* hanoi.py
* life.py
* markov.py
* mcast.py
* queens.py
* redemo.py
* rpython.py
* rpythond.py
* sortvisu.py
* spreadsheet.py
* vector.py

Changes:

* Remove a reference to the redemo.py script in the regex howto
  documentation.
* Remove a reference to the removed Tools/demo/ directory in the
  curses documentation.
* Update PC/layout/ to remove the reference to Tools/demo/ directory.

Author: vstinner

Doc/howto/regex.rst

@@ -378,11 +378,7 @@ containing information about the match: where it starts and ends, the substring
 it matched, and more.
 
 You can learn about this by interactively experimenting with the :mod:`re`
-module.  If you have :mod:`tkinter` available, you may also want to look at
-:source:`Tools/demo/redemo.py`, a demonstration program included with the
-Python distribution.  It allows you to enter REs and strings, and displays
-whether the RE matches or fails. :file:`redemo.py` can be quite useful when
-trying to debug a complicated RE.
+module.
 
 This HOWTO uses the standard Python interpreter for its examples. First, run the
 Python interpreter, import the :mod:`re` module, and compile a RE::

Doc/library/curses.rst

@@ -42,9 +42,6 @@ Linux and the BSD variants of Unix.
       Tutorial material on using curses with Python, by Andrew Kuchling and Eric
       Raymond.
 
-   The :source:`Tools/demo/` directory in the Python source distribution contains
-   some example programs using the curses bindings provided by this module.
-
 
 .. _curses-functions:
 

Doc/whatsnew/3.12.rst

@@ -170,6 +170,15 @@ CPython bytecode changes
   (Contributed by Ken Jin in :gh:`93429`.)
 
 
+Demos and Tools
+===============
+
+* Remove the ``Tools/demo/`` directory which contained old demo scripts. A copy
+  can be found in the `old-demos project
+  <https://github.com/gvanrossum/old-demos>`_.
+  (Contributed by Victor Stinner in :gh:`97681`.)
+
+
 Deprecated
 ==========
 

Misc/NEWS.d/next/Tools-Demos/2022-09-30-18-35-11.gh-issue-97681.-KO1Ba.rst

@@ -0,0 +1,3 @@
+Remove the ``Tools/demo/`` directory which contained old demo scripts. A copy
+can be found in the `old-demos project
+<https://github.com/gvanrossum/old-demos>`_.  Patch by Victor Stinner.

PC/layout/main.py

@@ -58,7 +58,7 @@
 
 DATA_DIRS = FileNameSet("data")
 
-TOOLS_DIRS = FileNameSet("scripts", "i18n", "demo", "parser")
+TOOLS_DIRS = FileNameSet("scripts", "i18n", "parser")
 TOOLS_FILES = FileSuffixSet(".py", ".pyw", ".txt")
 
 

Tools/README

@@ -5,8 +5,6 @@ buildbot        Batchfiles for running on Windows buildbot workers.
 
 ccbench         A Python threads-based concurrency benchmark. (*)
 
-demo            Several Python programming demos.
-
 freeze          Create a stand-alone executable from a Python program.
 
 gdb             Python code to be run inside gdb, to make it easier to