remove subdomain and resourceName check for idempotent

Author: Teng Lu

src/IotCentral/IotCentral/ChangeLog.md

@@ -19,7 +19,7 @@
 -->
 ## Upcoming Release
 ## Version 0.7.2
-* Remove subdomain check for create new IotCentral application, it will be handled by resource provider for idempotent
+* Remove subdomain and resource name checks for create new IotCentral application, it will be handled by resource provider for idempotent
 
 ## Version 0.7.1
 * Added subdomain parameter to Set-AzureRmIoTCentralApp for updating subdomain

src/IotCentral/IotCentral/Common/IotCentralUtils.cs

@@ -43,13 +43,5 @@ public static AppPatch CreateAppPatch(App iotCentralApp)
             };
             return copiedIotCenralApp;
         }
-
-        public static void EnsureAvailabilityOrThrow(AppAvailabilityInfo availabilityInfo)
-        {
-            if (availabilityInfo.NameAvailable != true)
-            {
-                throw new PSArgumentException(availabilityInfo.Message);
-            }
-        }
     }
 }