Update README.md

remove reference to wiki

Author: theresalech

README.md

@@ -2,7 +2,5 @@
 
 This tutorial is designed to show you how to include the SmartDeviceLink SDK in your app and to help you get your app’s features onto the vehicle’s infotainment head unit.
 
-Please visit the [wiki](https://github.com/smartdevicelink/sdl_mobileweather_tutorial_android/wiki) of this repository to get the full tutorial.
-
-### API Key
-This app was setup to use Weather Underground's API. Recently, they have removed the ability to obtain a free API Key for testing. If you have a Weather Underground API Key, you can place it in the `WundergroundService` class.
+### API Key
+This app was setup to use Weather Underground's API. Recently, they have removed the ability to obtain a free API Key for testing. If you have a Weather Underground API Key, you can place it in the `WundergroundService` class.