remove unused namespace

modules/client-simulation/src/Volo.ClientSimulation/Volo/ClientSimulation/Scenarios/ScenarioStep.cs

@@ -2,7 +2,6 @@
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Linq;
-using System.Resources;
 using System.Threading.Tasks;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.DependencyInjection;