SDL_net: README.txt: Removed mention of GUILib.

From 00c3df94bcc6da8a60672ea55179356130a47758 Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <[EMAIL REDACTED]>
Date: Tue, 21 Jun 2022 00:02:25 -0400
Subject: [PATCH] README.txt: Removed mention of GUILib.

 README.txt | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/README.txt b/README.txt
index a5ab6b1..d5e7f0a 100644
--- a/README.txt
+++ b/README.txt
@@ -11,8 +11,7 @@ This library supports UNIX, Windows, MacOS Classic, MacOS X,
 BeOS and QNX.
 The demo program is a chat client and server.
-The chat client requires the sample GUI library available at:
 The chat client connects to the server via TCP, registering itself.
 The server sends back a list of connected clients, and keeps the
 client updated with the status of other clients.