Swift cleanup: don't capture case values only to ignore them in switch statements

Signed-off-by: Bryan Montz <bryanmontz@me.com>
Signed-off-by: William Casarin <jb55@jb55.com>

damus/Nostr/NostrResponse.swift

@@ -21,7 +21,7 @@ enum NostrResponse: Decodable {
     
     var subid: String? {
         switch self {
-        case .ok(_):
+        case .ok:
             return nil
         case .event(let sub_id, _):
             return sub_id

damus/Nostr/WebSocket.swift

@@ -18,7 +18,7 @@ enum WebSocketEvent {
         switch self {
         case .connected:
             return "Connected"
-        case .message(_):
+        case .message:
             return nil  // adding this to the RelayLog was too noisy
         case .disconnected(let close_code, let reason):
             return "Disconnected: Close code: \(close_code), reason: \(reason ?? "unknown")"