Remove OSDelayTaskController and related code

- removed OSDelayTaskController.kt since no longer used now that we use Worker with a delay
- removed MockDelayTaskController.java which is used in unit tests
- removed other code related to these two classes

Author: nan-li

OneSignalSDK/onesignal/src/main/java/com/onesignal/OSDelayTaskController.kt

@@ -430,7 +430,6 @@ static OSInAppMessageController getInAppMessageController() {
    }
    private static OSTime time = new OSTimeImpl();
    private static OSRemoteParamController remoteParamController = new OSRemoteParamController();
-   private static OSDelayTaskController delayTaskController = new OSDelayTaskController(logger);
    private static OSTaskController taskController = new OSTaskController(logger);
    private static OSTaskRemoteController taskRemoteController = new OSTaskRemoteController(remoteParamController, logger);
    private static OneSignalAPIClient apiClient = new OneSignalRestClientWrapper();
@@ -3180,10 +3179,6 @@ static void setSharedPreferences(OSSharedPreferences preferences) {
       OneSignal.preferences = preferences;
    }
 
-   static void setDelayTaskController(OSDelayTaskController delayTaskController) {
-      OneSignal.delayTaskController = delayTaskController;
-   }
-
    static OSSessionManager.SessionListener getSessionListener() {
       return sessionListener;
    }
@@ -3208,10 +3203,6 @@ static OSTaskController getTaskController() {
       return taskController;
    }
 
-   static OSDelayTaskController getDelayTaskController() {
-      return delayTaskController;
-   }
-
    static FocusTimeController getFocusTimeController() {
       if (focusTimeController == null) {
          focusTimeController = new FocusTimeController(new OSFocusTimeProcessorFactory(), logger);

OneSignalSDK/onesignal/src/main/java/com/onesignal/OneSignal.java

@@ -125,10 +125,6 @@ public static void OneSignal_setTrackerFactory(OSTrackerFactory trackerFactory)
       OneSignal.setTrackerFactory(trackerFactory);
    }
 
-   public static void OneSignal_setDelayTaskController(OSDelayTaskController delayTaskController) {
-      OneSignal.setDelayTaskController(delayTaskController);
-   }
-
    public static JSONObject bundleAsJSONObject(Bundle bundle) {
       return NotificationBundleProcessor.bundleAsJSONObject(bundle);
    }
@@ -299,7 +295,6 @@ public static ConcurrentLinkedQueue<Runnable> OneSignal_taskQueueWaitingForInit(
    public static void OneSignal_OSTaskController_ShutdownNow() {
       OneSignal.getTaskRemoteController().shutdownNow();
       OneSignal.getTaskController().shutdownNow();
-      OneSignal.getDelayTaskController().shutdownNow();
    }
 
    public static boolean OneSignal_requiresUserPrivacyConsent() {

OneSignalSDK/unittest/src/test/java/com/onesignal/MockDelayTaskController.java

@@ -31,9 +31,6 @@ public static void load() {
          } else if (field.getName().equals("taskRemoteController")) {
             field.set(null, new OSTaskRemoteController(OneSignal.getRemoteParamController(), logger));
             return true;
-         } else if (field.getName().equals("delayTaskController")) {
-            field.set(null, new MockDelayTaskController(logger));
-            return true;
          } else if (field.getName().equals("inAppMessageControllerFactory")) {
             field.set(null, new OSInAppMessageControllerFactory());
             return true;

OneSignalSDK/unittest/src/test/java/com/onesignal/OneSignalPackagePrivateHelper.java

@@ -45,7 +45,6 @@
 
 import com.onesignal.FocusDelaySyncJobService;
 import com.onesignal.FocusDelaySyncService;
-import com.onesignal.MockDelayTaskController;
 import com.onesignal.MockOSLog;
 import com.onesignal.MockOSSharedPreferences;
 import com.onesignal.MockOSTimeImpl;
@@ -135,7 +134,6 @@
 import static com.onesignal.OneSignalPackagePrivateHelper.OneSignal_getSessionListener;
 import static com.onesignal.OneSignalPackagePrivateHelper.OneSignal_handleNotificationOpen;
 import static com.onesignal.OneSignalPackagePrivateHelper.OneSignal_isInForeground;
-import static com.onesignal.OneSignalPackagePrivateHelper.OneSignal_setDelayTaskController;
 import static com.onesignal.OneSignalPackagePrivateHelper.OneSignal_setSessionManager;
 import static com.onesignal.OneSignalPackagePrivateHelper.OneSignal_setTime;
 import static com.onesignal.OneSignalPackagePrivateHelper.OneSignal_setTrackerFactory;