fix formatting (#5596)

Rerun `./gradlew googleJavaFormat`  and fix unit tests
#no-changelog

Author: themiswang

firebase-crashlytics/src/main/java/com/google/firebase/crashlytics/internal/common/Utils.java

@@ -20,7 +20,6 @@
 import com.google.android.gms.tasks.Task;
 import com.google.android.gms.tasks.TaskCompletionSource;
 import com.google.errorprone.annotations.CanIgnoreReturnValue;
-
 import java.util.concurrent.Callable;
 import java.util.concurrent.CancellationException;
 import java.util.concurrent.CountDownLatch;

firebase-crashlytics/src/main/java/com/google/firebase/crashlytics/internal/metadata/UserMetadata.java

@@ -16,7 +16,6 @@
 
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
-
 import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import com.google.firebase.crashlytics.internal.common.CommonUtils;
 import com.google.firebase.crashlytics.internal.common.CrashlyticsBackgroundWorker;