samba: Fix typo in PACKAGECONFIG for "acl" and "aio"

There's a "-" too many in PACKAGECONFIG[acl] and PACKAGECONFIG[aio]
resulting in errors like this if built without acl:
  waf: error: no such option: ---without-acl-support

Remove the extra "-" to fix the issue.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Joe MacDonald <joe_macdonald@mentor.com>