Remove NotificationService file updates

MIGRATION_GUIDE.md

@@ -47,92 +47,7 @@ In your Project Root > ios > Podfile, update the notification service extension:
     end
 ```
 
-Close Xcode. While still in the ios directory, run `pod install` again.
-
-Re-Open the `. xcworkspace` file in Xcode. In the OneSignalNotificationServiceExtension directory > `NotificationService.m` or `NotificationService.swift` file, replace the whole file contents with the code below:
-
-**Objective-C**
-```objc
-#import <OneSignalExtension/OneSignalExtension.h>
-
-#import "NotificationService.h"
-
-@interface NotificationService ()
-
-@property (nonatomic, strong) void (^contentHandler)(UNNotificationContent *contentToDeliver);
-@property (nonatomic, strong) UNNotificationRequest *receivedRequest;
-@property (nonatomic, strong) UNMutableNotificationContent *bestAttemptContent;
-
-@end
-
-@implementation NotificationService
-
-- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request withContentHandler:(void (^)(UNNotificationContent * _Nonnull))contentHandler {
-    self.receivedRequest = request;
-    self.contentHandler = contentHandler;
-    self.bestAttemptContent = [request.content mutableCopy];
-
-    /* DEBUGGING: Uncomment the 2 lines below and comment out the one above to ensure this extension is executing
-                  Note, this extension only runs when mutable-content is set
-                  Setting an attachment or action buttons automatically adds this */
-    // NSLog(@"Running NotificationServiceExtension");
-    // self.bestAttemptContent.body = [@"[Modified] " stringByAppendingString:self.bestAttemptContent.body];
-
-    [OneSignalExtension didReceiveNotificationExtensionRequest:self.receivedRequest
-                       withMutableNotificationContent:self.bestAttemptContent
-                                   withContentHandler:self.contentHandler];
-}
-
-- (void)serviceExtensionTimeWillExpire {
-    // Called just before the extension will be terminated by the system.
-    // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
-
-    [OneSignalExtension serviceExtensionTimeWillExpireRequest:self.receivedRequest withMutableNotificationContent:self.bestAttemptContent];
-
-    self.contentHandler(self.bestAttemptContent);
-}
-
-@end
-```
-
-**Swift**
-```swift
-import UserNotifications
-
-import OneSignalExtension
-
-class NotificationService: UNNotificationServiceExtension {
-    
-    var contentHandler: ((UNNotificationContent) -> Void)?
-    var receivedRequest: UNNotificationRequest!
-    var bestAttemptContent: UNMutableNotificationContent?
-    
-    override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
-        self.receivedRequest = request
-        self.contentHandler = contentHandler
-        self.bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
-        
-        if let bestAttemptContent = bestAttemptContent {
-            /* DEBUGGING: Uncomment the 2 lines below to check this extension is executing
-                          Note, this extension only runs when mutable-content is set
-                          Setting an attachment or action buttons automatically adds this */
-            // print("Running NotificationServiceExtension")
-            // bestAttemptContent.body = "[Modified] " + bestAttemptContent.body
-            
-            OneSignalExtension.didReceiveNotificationExtensionRequest(self.receivedRequest, with: bestAttemptContent, withContentHandler: self.contentHandler)
-        }
-    }
-    
-    override func serviceExtensionTimeWillExpire() {
-        // Called just before the extension will be terminated by the system.
-        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
-        if let contentHandler = contentHandler, let bestAttemptContent =  bestAttemptContent {
-            OneSignalExtension.serviceExtensionTimeWillExpireRequest(self.receivedRequest, with: self.bestAttemptContent)
-            contentHandler(bestAttemptContent)
-        }
-    }  
-}
-```
+Close Xcode. While still in the ios directory, run `pod install --repo-update`.
 
 # API Changes