Update README.md

Remove Robolectric

Author: dturner

README.md

@@ -12,7 +12,7 @@ In this branch you'll find:
 *   Reactive UIs using **[Flow](https://developer.android.com/kotlin/flow)** and **[coroutines](https://kotlinlang.org/docs/coroutines-overview.html)** for asynchronous operations.
 *   A **data layer** with a repository and two data sources (local using Room and a fake remote).
 *   Two **product flavors**, `mock` and `prod`, [to ease development and testing](https://android-developers.googleblog.com/2015/12/leveraging-product-flavors-in-android.html).
-*   A collection of unit, integration and e2e **tests**, including "shared" tests that can be run on emulator/device or Robolectric.
+*   A collection of unit, integration and e2e **tests**, including "shared" tests that can be run on emulator/device.
 *   Dependency injection using [Hilt](https://developer.android.com/training/dependency-injection/hilt-android).
 
 ## Variations