remove unused label

git cherry-pick accidentially picked up a line from another commit for the JSON API

Server/Server.cs

@@ -308,7 +308,6 @@ public class Server {
         disconnect:
         Logger.Info($"Client {socket.RemoteEndPoint} ({client.Name}/{client.Id}) disconnected from the server");
 
-        close:
         bool wasConnected = client.Connected;
         // Clients.Remove(client)
         client.Connected = false;