gh-133810: remove `http.server.CGIHTTPRequestHandler` and `--cgi` flag (#133811)

The CGI HTTP request handler has been deprecated since Python 3.13.

1 files changed, 4 insertions, 5 deletions

diff --git a/Lib/http/client.py b/Lib/http/client.py
index 33a858d34ae..e7a1c7bc3b2 100644
--- a/Lib/http/client.py
+++ b/Lib/http/client.py
@@ -181,11 +181,10 @@ def _strip_ipv6_iface(enc_name: bytes) -> bytes:
     return enc_name
 
 class HTTPMessage(email.message.Message):
-    # XXX The only usage of this method is in
-    # http.server.CGIHTTPRequestHandler.  Maybe move the code there so
-    # that it doesn't need to be part of the public API.  The API has
-    # never been defined so this could cause backwards compatibility
-    # issues.
+
+    # The getallmatchingheaders() method was only used by the CGI handler
+    # that was removed in Python 3.15. However, since the public API was not
+    # properly defined, it will be kept for backwards compatibility reasons.
 
     def getallmatchingheaders(self, name):
         """Find all header lines matching a given header name.