remove test code

client_html/assets/index.html

@@ -580,18 +580,6 @@ function main() {
 
 main();
 
-
-function simulateReceivingMessages() {
-    // Simulate receiving messages
-    setInterval(() => {
-        const channels = ["root", "general", "random"];
-        const channel = channels[Math.floor(Math.random() * channels.length)];
-        const username = `User${randomNumericString(4)}`;
-        const message = `Hello ${channel} from ${username}!`;
-        messages.push([Date.now(), channel, username, message]);
-    }, 100);
-}
-
 </script>
 </body>