Removed unused exposed publishers from StripeCardReaderService

Author: kidinov

Hardware/Hardware/CardReader/StripeCardReader/StripeCardReaderService.swift

@@ -10,9 +10,7 @@ public final class StripeCardReaderService: NSObject {
 
     private var discoveredReadersSubject = CurrentValueSubject<[CardReader], Error>([])
     private let connectedReadersSubject = CurrentValueSubject<[CardReader], Never>([])
-    private let serviceStatusSubject = CurrentValueSubject<CardReaderServiceStatus, Never>(.ready)
     private let discoveryStatusSubject = CurrentValueSubject<CardReaderServiceDiscoveryStatus, Never>(.idle)
-    private let paymentStatusSubject = CurrentValueSubject<PaymentStatus, Never>(.notReady)
     private let readerEventsSubject = PassthroughSubject<CardReaderEvent, Never>()
     private let softwareUpdateSubject = CurrentValueSubject<CardReaderSoftwareUpdateState, Never>(.none)