[CI] Auto commit changes from spotless

Author: elasticsearchmachine

build-tools-internal/src/main/java/org/elasticsearch/gradle/internal/release/GenerateReleaseNotesTask.java

@@ -36,13 +36,9 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
-import java.util.Set;
-import java.util.stream.Stream;
 
 import javax.inject.Inject;
 
-import static java.util.stream.Collectors.toSet;
-
 /**
  * Orchestrates the steps required to generate or update various release notes files.
  */