remove parameter from enum

deltachat-ios/Controller/ChatViewController.swift

@@ -408,7 +408,7 @@ class ChatViewController: MessagesViewController {
             let cell = messagesCollectionView.dequeueReusableCell(CustomMessageCell.self, for: indexPath)
             cell.configure(with: message, at: indexPath, and: messagesCollectionView)
             return cell
-        case .audio(_):
+        case .audio:
             let cell = messagesCollectionView.dequeueReusableCell(AudioMessageCell.self, for: indexPath)
             cell.configure(with: message, at: indexPath, and: messagesCollectionView)
             return cell