Fix validation error

Author: gitName

learn-pr/paths/azure-static-web-apps/index.yml

@@ -39,7 +39,6 @@ subjects:
 modules:
 - learn.azure.publish-static-web-app-and-api
 - learn.azure.publish-static-web-app-api-preview-url
-- learn.azure.publish-static-web-app-authentication
 - learn.azure.publish-static-web-app-and-api-dotnet
 trophy:
   uid: learn.azure-static-web-apps.trophy