Did you get this working?
(this should be a general CDI question on how you disable CDI scanning)
without exception / error log / deployment log it is hard to tell what exactly is the problem.
CDI can be disabled in many way, one of them is using beans.xml other is to disable weld subsystem for deployment or for whole server.
But if I understand correctly you tried beans.xml solution and it didn't help, so it is quite possible that CDI is not a problem.
so log message would be more than useful.