Removed extra links from README

Author: jkasten2

README.md

@@ -6,11 +6,6 @@ OneSignal Android Push Notification Plugin
 
 OneSignal is a free push notification service for mobile apps. This plugin makes it easy to integrate your native Android or Amazon app with OneSignal.
 
-- See https://documentation.onesignal.com/docs/android-sdk-setup for Android setup documentation.
-- See https://documentation.onesignal.com/docs/amazon-sdk-setup for Amazon setup documentation.
-- See https://documentation.onesignal.com/reference for OneSignal API documentation.
-
-
 #### Installation
 See OneSignal's [Android Native SDK Setup Guide](https://documentation.onesignal.com/docs/android-sdk-setup) for documentation.