samba-server.yml: Simplify a glob

There are no YCP modules in samba-server, so no need to glob for them.

Suggested by Martin Vidner:

  https://github.com/yast/ycp-killer/pull/178/files#r3851745
Merge pull request #197 from yast/simplify-samba-server-glob

samba-server.yml: Simplify a glob