diff --git a/core/src/test/java/org/apache/spark/launcher/SparkLauncherSuite.java b/core/src/test/java/org/apache/spark/launcher/SparkLauncherSuite.java
index a042375c6ae9..1543f4fdb016 100644
--- a/core/src/test/java/org/apache/spark/launcher/SparkLauncherSuite.java
+++ b/core/src/test/java/org/apache/spark/launcher/SparkLauncherSuite.java
@@ -24,7 +24,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Properties;
-import java.util.concurrent.TimeUnit;
 
 import org.junit.Test;
 import static org.junit.Assert.*;
diff --git a/launcher/src/test/java/org/apache/spark/launcher/BaseSuite.java b/launcher/src/test/java/org/apache/spark/launcher/BaseSuite.java
index 3722a59d9438..438349e027a2 100644
--- a/launcher/src/test/java/org/apache/spark/launcher/BaseSuite.java
+++ b/launcher/src/test/java/org/apache/spark/launcher/BaseSuite.java
@@ -18,7 +18,6 @@
 package org.apache.spark.launcher;
 
 import java.time.Duration;
-import java.util.concurrent.TimeUnit;
 
 import org.junit.After;
 import org.slf4j.bridge.SLF4JBridgeHandler;