Embed Cronet and drop OkHttp (#895)

* Embed Cronet and drop OkHttp

* Fix updater

README.md

@@ -70,13 +70,9 @@ and [Dynamic Color](https://m3.material.io/styles/color/dynamic-color/overview)
 |-------------|-----------------------------------|
 | Default     | Android 9+, full support          |
 | Marshmallow | Android 6.0-8.1, limited support* |
-| OSS         | FOSS dependencies**               |
-| GMS         | Proprietary GMS component         |
 
 \* May not support some archives
 
-** Fall back to OkHttp on devices that don't support [HttpEngine](https://developer.android.com/reference/android/net/http/HttpEngine)
-
 <a href="https://github.com/FooIbar/EhViewer/releases">
 <img alt="Get it on GitHub" src="https://github.com/Ehviewer-Overhauled/Art/blob/master/get-it-on-github.svg" width="200px"/>
 </a>