fix(staff): 修复班次重复校验逻辑

buhuazhen

2026-03-20 1e99f2e0b5bfb9182e17037c1b861476a20f8936

 src/main/java/com/ruoyi/device/service/impl/DeviceMaintenanceServiceImpl.java

@@ -17,7 +17,6 @@

import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;