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, 58 deletions

diff --git a/Tools/demo/rpythond.py b/Tools/demo/rpythond.py
deleted file mode 100755
index 4e47fb9ec41..00000000000
--- a/Tools/demo/rpythond.py
+++ /dev/null
@@ -1,58 +0,0 @@
-#!/usr/bin/env python3
-
-"""
-Remote python server.
-Execute Python commands remotely and send output back.
-
-WARNING: This version has a gaping security hole -- it accepts requests
-from any host on the internet!
-"""
-
-import sys
-from socket import socket, AF_INET, SOCK_STREAM
-import io
-import traceback
-
-PORT = 4127
-BUFSIZE = 1024
-
-def main():
-    if len(sys.argv) > 1:
-        port = int(sys.argv[1])
-    else:
-        port = PORT
-    s = socket(AF_INET, SOCK_STREAM)
-    s.bind(('', port))
-    s.listen(1)
-    while True:
-        conn, (remotehost, remoteport) = s.accept()
-        with conn:
-            print('connection from', remotehost, remoteport)
-            request = b''
-            while True:
-                data = conn.recv(BUFSIZE)
-                if not data:
-                    break
-                request += data
-            reply = execute(request.decode())
-            conn.send(reply.encode())
-
-def execute(request):
-    stdout = sys.stdout
-    stderr = sys.stderr
-    sys.stdout = sys.stderr = fakefile = io.StringIO()
-    try:
-        try:
-            exec(request, {}, {})
-        except:
-            print()
-            traceback.print_exc(100)
-    finally:
-        sys.stderr = stderr
-        sys.stdout = stdout
-    return fakefile.getvalue()
-
-try:
-    main()
-except KeyboardInterrupt:
-    pass