Revert "smoke tests for ml modeldownloader (#2453)" (#2471)

This reverts commit 52b1dca.

Author: annzimmer

smoke-tests/build.gradle

@@ -73,7 +73,6 @@ dependencies {
   // TODO(yifany): Restore after messaging in github is up to date
   // implementation "com.google.firebase:firebase-messaging"
   implementation "com.google.firebase:firebase-ml-vision"
-  implementation "com.google.firebase:firebase-ml-modeldownloader"
   implementation "com.google.firebase:firebase-perf"
   implementation "com.google.firebase:firebase-storage"
 

smoke-tests/src/main/java/com/google/firebase/testing/BuildOnlyTest.java

@@ -20,7 +20,6 @@
 import com.google.firebase.inappmessaging.FirebaseInAppMessaging;
 // import com.google.firebase.messaging.FirebaseMessaging;
 // import com.google.firebase.perf.FirebasePerformance;
-import com.google.firebase.ml.modeldownloader.FirebaseModelDownloader;
 import com.google.firebase.ml.vision.FirebaseVision;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -54,9 +53,4 @@ public void inappmessaging_IsNotNull() {
   public void vision_IsNotNull() {
     assertThat(FirebaseVision.getInstance()).isNotNull();
   }
-
-  @Test
-  public void modelDownloader_IsNotNull() {
-    assertThat(FirebaseModelDownloader.getInstance()).isNotNull();
-  }
 }