ENYO-3658: removed compatibility code (for onyx < pilot-13) 


* ENYO-3658: removed compatibility code (for onyx < pilot-13) 

Related JIRA: https://enyojs.atlassian.net/browse/ENYO-3627

Enyo-DCO-1.1-Signed-off-by: Dominique Dumont <dominique.dumont@hp.com>