Merge branch 'diskbbq_segment_affinity' of github.com:tteofili/elasticsearch into diskbbq_segment_affinity

Author: tteofili

server/src/main/java/org/elasticsearch/search/vectors/AbstractIVFKnnVectorQuery.java

@@ -52,9 +52,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
-import java.util.OptionalDouble;
 import java.util.concurrent.Callable;
-import java.util.stream.Collectors;
 
 import static org.apache.lucene.index.VectorSimilarityFunction.COSINE;
 import static org.apache.lucene.index.VectorSimilarityFunction.MAXIMUM_INNER_PRODUCT;