[CI] Auto commit changes from spotless

Author: elasticsearchmachine

server/src/test/java/org/elasticsearch/index/engine/ThreadPoolMergeExecutorServiceDiskSpaceTests.java

@@ -19,7 +19,6 @@
 import org.elasticsearch.env.Environment;
 import org.elasticsearch.env.NodeEnvironment;
 import org.elasticsearch.env.TestEnvironment;
-import org.elasticsearch.index.engine.ThreadPoolMergeScheduler.MergeTask;
 import org.elasticsearch.test.ESTestCase;
 import org.elasticsearch.threadpool.TestThreadPool;
 import org.junit.AfterClass;
@@ -33,17 +32,12 @@
 import java.nio.file.attribute.FileAttributeView;
 import java.nio.file.attribute.FileStoreAttributeView;
 import java.nio.file.spi.FileSystemProvider;
-import java.util.Comparator;
-import java.util.IdentityHashMap;
 import java.util.LinkedHashSet;
-import java.util.SortedSet;
-import java.util.TreeSet;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicReference;
 
 import static org.hamcrest.Matchers.is;
-import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.mock;
 
 public class ThreadPoolMergeExecutorServiceDiskSpaceTests extends ESTestCase {