학습 실패여부 확인 기능 추가

src/main/java/com/kamco/cd/training/KamcoTrainingApplication.java

@@ -2,10 +2,8 @@ package com.kamco.cd.training;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.scheduling.annotation.EnableAsync;
 import org.springframework.scheduling.annotation.EnableScheduling;
 
-@EnableAsync
 @SpringBootApplication
 @EnableScheduling
 public class KamcoTrainingApplication {