[EventGrid] override HealthcareFhirResourceDeletedEventData.resourceF… (#35177)

* [EventGrid] override HealthcareFhirResourceDeletedEventData.resourceFhirAccount to FhirServiceHostName

for all client sdk languages, not just autorest.

Author: jeremymeng

specification/eventgrid/Azure.Messaging.EventGrid.SystemEvents/propertyNameOverride.tsp

@@ -61,8 +61,7 @@ using Azure.ClientGenerator.Core;
   "FhirResourceType"
 );
 @@clientName(HealthcareFhirResourceDeletedEventData.resourceFhirAccount,
-  "FhirServiceHostName",
-  "autorest"
+  "FhirServiceHostName"
 );
 @@clientName(HealthcareFhirResourceDeletedEventData.resourceFhirId,
   "FhirResourceId"