Remove unnecessary assertions during test setup

Author: lfkellogg

firebase-appdistribution/src/test/java/com/google/firebase/appdistribution/impl/FirebaseAppDistributionServiceImplTest.java

@@ -522,14 +522,10 @@ public void signOutTester_unsetsCachedNewRelease()
       throws InterruptedException, FirebaseAppDistributionException, ExecutionException {
     Task<AppDistributionReleaseInternal> setCachedNewReleaseTask =
         firebaseAppDistribution.getCachedNewRelease().set(TEST_RELEASE_NEWER_AAB_INTERNAL);
-
-    // Confirm that the cached new release is initially set
     awaitTask(setCachedNewReleaseTask);
-    assertThat(setCachedNewReleaseTask.getResult()).isEqualTo(TEST_RELEASE_NEWER_AAB_INTERNAL);
 
     // Sign out the tester
     firebaseAppDistribution.signOutTester();
-    awaitAsyncOperations(lightweightExecutor);
 
     // Confirm that the cached new release is now null
     Task<AppDistributionReleaseInternal> cachedNewReleaseTask =