remove support for topic set

--HG--
branch : nmdc-ircfrontend

server.go

@@ -225,31 +225,15 @@ func (s *Server) handleCommand(client *Client, command string, args []string) {
 			return
 		}
 
+		// Valid topic get
 		if len(args) == 1 {
-			client.reply(rplTopic, channel.name, channel.topic)
+			client.reply(rplTopic, channel.name, s.name)
 			return
 		}
 
-		clientMode := channel.modeMap[client.key]
-		if channel.mode.topicLocked && !clientMode.operator {
+		// Disallow topic set
 		client.reply(errNoPriv)
 		return
-		}
-
-		if args[1] == ":" {
-			channel.topic = ""
-			for _, client := range channel.clientMap {
-				client.reply(rplNoTopic, channel.name)
-			}
-		} else {
-			topic := strings.Join(args[1:], " ")
-			topic = strings.TrimPrefix(topic, ":")
-			channel.topic = topic
-
-			for _, client := range channel.clientMap {
-				client.reply(rplTopic, channel.name, channel.topic)
-			}
-		}
 
 	case "LIST":
 		if client.registered == false {