test: Try different element deletion of element in keyword selection

app.py

@@ -156,7 +156,7 @@ def generate_plot(
             cluster_to_words_similarities = cluster_to_words_similarities.numpy()
             while len(cluster_keyword[label]) < 3:
                 most_descriptive = np.argmax(cluster_to_words_similarities)
-                del cluster_to_words_similarities[most_descriptive]
+                cluster_to_words_similarities = np.delete(cluster_to_words_similarities, most_descriptive)
                 cluster_keyword[label].append(cluster_words[most_descriptive])
         encoded_labels_keywords = [cluster_keyword[encoded_label] for encoded_label in encoded_labels]
         embeddings_2d = get_tsne_embeddings(embeddings)