Remove extra interface.

Author: Dallas62

android/src/main/java/com/dieam/reactnativepushnotification/modules/RNPushNotification.java

@@ -38,7 +38,7 @@
 import com.google.firebase.iid.InstanceIdResult;
 import com.google.firebase.messaging.FirebaseMessaging;
 
-public class RNPushNotification extends ReactContextBaseJavaModule implements ActivityEventListener , Application.ActivityLifecycleCallbacks{
+public class RNPushNotification extends ReactContextBaseJavaModule implements ActivityEventListener {
     public static final String LOG_TAG = "RNPushNotification";// all logging should use this tag
 
     private RNPushNotificationHelper mRNPushNotificationHelper;