Update OmsCartItemServiceImpl.java

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

@@ -14,7 +14,6 @@ import com.macro.mall.portal.service.UmsMemberService;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
 import org.springframework.util.CollectionUtils;
-import org.springframework.util.StringUtils;
 
 import java.util.ArrayList;
 import java.util.Date;