fix context

web/ASC.Web.Core/RemovePortal/RemovePortalOperation.cs

@@ -67,6 +67,8 @@ public class RemovePortalOperation : DistributedTaskProgress
     {
         try
         {
+            CustomSynchronizationContext.CreateContext();
+
             _logger.DebugStartRemoveTenant(TenantId);
 
             var tenant = _tenantManager.GetTenant(TenantId);

web/ASC.Web.Studio/IntegrationEvents/RemovePortalIntegrationEventHandler.cs

@@ -24,10 +24,6 @@
 // content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
 // International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
 
-using ASC.EventBus.Abstractions;
-using ASC.EventBus.Log;
-using ASC.Web.Core.RemovePortal;
-
 using ILogger = Microsoft.Extensions.Logging.ILogger;
 
 namespace ASC.Web.Studio.IntegrationEvents;