Remove over-eager protobuf stripping.

app/build.gradle

@@ -391,10 +391,6 @@ configurations {
     // correct runtime classpath when invoked with Android Studio's built-in JUnit test runner.
     // Success!
     jnaForTest
-    // Robolectric, through `com.google.android.apps.common.testing.accessibility.framework`
-    // depends on an old version of protobuf that conflict with the Application Services one.
-    // See: https://github.com/mozilla/application-services/issues/2952
-    all*.exclude group: 'com.google.protobuf', module: 'protobuf-java'
 }
 
 dependencies {