[CI] Auto commit changes from spotless

Author: elasticsearchmachine

x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/plan/QueryPlan.java

@@ -16,7 +16,6 @@
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
-import java.util.Set;
 import java.util.function.Consumer;
 import java.util.function.Function;