JAVA-8924 Cleanup for spliterator article (#14221)

core-java-modules/core-java-8/src/main/java/com/baeldung/spliterator/Executor.java

@@ -1,7 +1,5 @@
 package com.baeldung.spliterator;
 
-import java.util.List;
-import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 public class Executor {
@@ -11,9 +9,4 @@ public class Executor {
 				RelatedAuthorCounter::accumulate, RelatedAuthorCounter::combine);
 		return wordCounter.getCounter();
 	}
-
-	public static List<Article> generateElements() {
-		return Stream.generate(() -> new Article("Java")).limit(35000).collect(Collectors.toList());
-	}
-
 }

core-java-modules/core-java-8/src/main/java/com/baeldung/spliterator/Task.java

@@ -1,27 +0,0 @@
-package com.baeldung.spliterator;
-
-import java.util.Spliterator;
-import java.util.concurrent.Callable;
-
-public class Task implements Callable<String> {
-    private Spliterator<Article> spliterator;
-    private final static String SUFFIX = "- published by Baeldung";
-
-    public Task(Spliterator<Article> spliterator) {
-        this.spliterator = spliterator;
-    }
-
-    @Override
-    public String call() {
-        int current = 0;
-        while (spliterator.tryAdvance(article -> {
-            article.setName(article.getName()
-                .concat(SUFFIX));
-        })) {
-            current++;
-        }
-        ;
-        return Thread.currentThread()
-            .getName() + ":" + current;
-    }
-}