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.

1 files changed, 0 insertions, 37 deletions

diff --git a/Tools/demo/rpython.py b/Tools/demo/rpython.py
deleted file mode 100755
index 11f72cb3dd2..00000000000
--- a/Tools/demo/rpython.py
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/usr/bin/env python3
-
-"""
-Remote python client.
-Execute Python commands remotely and send output back.
-"""
-
-import sys
-from socket import socket, AF_INET, SOCK_STREAM, SHUT_WR
-
-PORT = 4127
-BUFSIZE = 1024
-
-def main():
-    if len(sys.argv) < 3:
-        print("usage: rpython host command")
-        sys.exit(2)
-    host = sys.argv[1]
-    port = PORT
-    i = host.find(':')
-    if i >= 0:
-        port = int(host[i+1:])
-        host = host[:i]
-    command = ' '.join(sys.argv[2:])
-    with socket(AF_INET, SOCK_STREAM) as s:
-        s.connect((host, port))
-        s.send(command.encode())
-        s.shutdown(SHUT_WR)
-        reply = b''
-        while True:
-            data = s.recv(BUFSIZE)
-            if not data:
-                break
-            reply += data
-        print(reply.decode(), end=' ')
-
-main()