Remove directive (#25839)

Removed noHealthyBackendsBehavior directive.

Author: EugenioPena

src/Network/Network.Management.Sdk/README.md

@@ -103,7 +103,4 @@ directive:
       model-name: Components1Jq1T4ISchemasManagedserviceidentityPropertiesUserassignedidentitiesAdditionalproperties
     set:
       model-name: ManagedServiceIdentityUserAssignedIdentitiesValue
-  - from: swagger-document
-    where: $
-    transform: return $.replace(/"NoHealthyBackendsBehavior"/g, "noHealthyBackendsBehavior")
 ```