[CI] Auto commit changes from spotless

Author: elasticsearchmachine

server/src/test/java/org/elasticsearch/index/codec/vectors/IVFVectorsFormatTests.java

@@ -28,7 +28,6 @@
 import org.apache.lucene.tests.index.BaseKnnVectorsFormatTestCase;
 import org.apache.lucene.tests.util.TestUtil;
 import org.elasticsearch.common.logging.LogConfigurator;
-import org.hamcrest.Matchers;
 import org.junit.Before;
 
 import java.io.IOException;