[진료관리] 임포트 누락 추가.

src/main/java/com/lemon/lifecenter/service/PHRService.java

@@ -1,5 +1,7 @@
 package com.lemon.lifecenter.service;
 
+import java.text.SimpleDateFormat;
+import java.util.Date;
 import java.util.List;
 
 import org.springframework.beans.factory.annotation.Autowired;