fix 移除tokensource

Src/Dlhis.Middle/Services/Implements/HealthcheckService.cs

@@ -54,14 +54,15 @@ public class HealthCheckService : IHealthCheckService
                 _successRetry = 0;
                 _isOffline = true;
                 _logger.LogDebug("current is {status}", "unavailable");
-                await Task.Delay(500, cancellationTokenSource.Token);
+                await Task.Delay(500);
             }
         }
         catch (Exception ex)
         {
             _logger.LogError("fail cause :{reason}", ex.Message);
             _isOffline = true;
-            await Task.Delay(5000, cancellationTokenSource.Token);
+
+            await Task.Delay(5000);
         }
     }
 }