Revert "BAEL-812: List of Rules Engines in Java (#2319)" (#2455)

This reverts commit dc105bc6f2.

spring-core/src/main/java/com/baeldung/autowired/TypesOfBeanInjectionSpring.java

@@ -1,70 +0,0 @@
-package com.baeldung.autowired;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.CommandLineRunner;
-import org.springframework.boot.SpringApplication;
-import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.context.annotation.Bean;
-import org.springframework.stereotype.Service;
-
-@SpringBootApplication
-public class TypesOfBeanInjectionSpring {
-    private final UserService userService;
-
-    @Autowired // the @Autowired can even be omitted, in case there's only one explicit constructor
-    public TypesOfBeanInjectionSpring(UserService userService) {
-        this.userService = userService;
-    }
-    
-    public static void main(String[] args) {
-        SpringApplication.run(TypesOfBeanInjectionSpring.class, args);
-    }
-
-    @Bean
-    CommandLineRunner runIt() {
-        return args -> {
-            userService.listUsers()
-                .stream()
-                .forEach(System.out::println);
-        };
-    }
-}
-
-class User {
-    private String name;
-
-    public User(String name) {
-        this.name = name;
-    }
-
-    // getters and setters ...
-    public String getName() {
-        return this.name;
-    }
-
-    public String toString() {
-        return name;
-    }
-
-}
-
-interface UserService {
-    List<User> listUsers();
-}
-
-@Service
-class UserServiceImpl implements UserService {
-
-    @Override
-    public List<User> listUsers() {
-        ArrayList<User> users = new ArrayList<>(3);
-        users.add(new User("Snoopy"));
-        users.add(new User("Woodstock"));
-        users.add(new User("Charlie Brown"));
-        return users;
-    }
-
-}