TreeBuilder: remove anoying log message.
TreeBuilder: remove anoying log message.

https://bugzilla.redhat.com/show_bug.cgi?id=1249726
(transferred from ManageIQ/manageiq@58faddf3e00e2c39af7ea60ef92dd6c1bad9996e)

ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic,ManageIQ/manageiq-ui-classic