Remove unnecessary check

SignalServiceKit/src/Loki/Push Notifications/LokiPushNotificationManager.swift

@@ -24,33 +24,21 @@ public final class LokiPushNotificationManager : NSObject {
     /// Unregisters the user from push notifications. Only the user's device token is needed for this.
     static func unregister(with token: Data, isForcedUpdate: Bool) -> Promise<Void> {
         let hexEncodedToken = token.toHexString()
-        let userDefaults = UserDefaults.standard
-        let oldToken = userDefaults[.deviceToken]
-        let lastUploadTime = userDefaults[.lastDeviceTokenUpload2]
-        let isUsingFullAPNs = userDefaults[.isUsingFullAPNs]
-        let now = Date().timeIntervalSince1970
-        guard isForcedUpdate || hexEncodedToken != oldToken || now - lastUploadTime > tokenExpirationInterval else {
-            print("[Loki] Device token hasn't changed or expired; no need to re-upload.")
-            return Promise<Void> { $0.fulfill(()) }
-        }
         let parameters = [ "token" : hexEncodedToken ]
         let url = URL(string: "\(server)/unregister")!
         let request = TSRequest(url: url, method: "POST", parameters: parameters)
         request.allHTTPHeaderFields = [ "Content-Type" : "application/json" ]
         let promise = OnionRequestAPI.sendOnionRequest(request, to: server, using: pnServerPublicKey).map2 { response in
             guard let json = response as? JSON else {
-                return print("[Loki] Couldn't register device token.")
+                return print("[Loki] Couldn't unregister from push notifications.")
             }
             guard json["code"] as? Int != 0 else {
-                return print("[Loki] Couldn't register device token due to error: \(json["message"] as? String ?? "nil").")
+                return print("[Loki] Couldn't unregister from push notifications due to error: \(json["message"] as? String ?? "nil").")
             }
-            userDefaults[.deviceToken] = hexEncodedToken
-            userDefaults[.lastDeviceTokenUpload2] = now
-            userDefaults[.isUsingFullAPNs] = false
             return
         }
         promise.catch2 { error in
-            print("[Loki] Couldn't register device token.")
+            print("[Loki] Couldn't unregister from push notifications.")
         }
         // Unsubscribe from all closed groups
         Storage.getUserClosedGroupPublicKeys().forEach { closedGroup in