Update OmsPromotionServiceImpl.java

mall-portal/src/main/java/com/macro/mall/portal/service/impl/OmsPromotionServiceImpl.java

@@ -11,7 +11,6 @@ import com.macro.mall.portal.service.OmsPromotionService;
 import org.springframework.beans.BeanUtils;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
-import org.springframework.util.CollectionUtils;
 
 import java.math.BigDecimal;
 import java.math.RoundingMode;