Update dependecy and cleanup code (#2581)

## Summary
This pr intruduces the following changes: 
- Upgrades the [Alomofire
dependecy](142efae0cc).
- Removes not needed [available
anotations](a4e71a3c88)
and split up code in multiple files; The anotations are not needed since
https://github.com/home-assistant/iOS/pull/2469.

## Screenshots
No user faceing changes

## Link to pull request in Documentation repository
NA

## Any other notes
NA

Sources/Extensions/NotificationContent/NotificationViewController.swift

@@ -1,7 +1,6 @@
 import Alamofire
 import KeychainAccess
 import MBProgressHUD
-import ObjectMapper
 import PromiseKit
 import Shared
 import UIKit