Merge pull request #1892 from vespa-engine/kkraune/fix

don't use deprecated methods

Author: kkraune

billion-scale-image-search/app/src/main/java/ai/vespa/examples/Centroids.java

@@ -124,8 +124,7 @@ public List<Centroid> prune(List<Centroid> centroids, double factor) {
     private Query buildNNQuery(int k, int extraK, Tensor queryVector, Duration timeout) {
         NearestNeighborItem nn = new NearestNeighborItem("reduced_vector", "q_reduced");
         nn.setAllowApproximate(true);
-        nn.setTargetHits(k);
-        nn.setHnswExploreAdditionalHits(extraK);
+        nn.setTargetHits(extraK);
         Query query = new Query();
         query.setTimeout(timeout.toMillis());
         query.setHits(k);

billion-scale-vector-search/app/src/main/java/ai/vespa/examples/ClusteringComponent.java

@@ -145,8 +145,7 @@ public List<Centroid> prune(List<Centroid> centroids, double factor) {
     private Query buildNNQuery(int k, int extraK, Tensor queryVector, Duration timeout) {
         NearestNeighborItem nn = new NearestNeighborItem("vector", "q");
         nn.setAllowApproximate(true);
-        nn.setTargetHits(k);
-        nn.setHnswExploreAdditionalHits(extraK);
+        nn.setTargetHits(extraK);
         Query query = new Query();
         query.setTimeout(timeout.toMillis());
         query.setHits(k);