Summary:
Theme is set during finalize in Efl.Ui.Layout_Base.
Therefore, it is not necessary to call theme set function if the widget
inherits Efl.Ui.Layout_Base and its klass is properly set.
Reviewers: zmike, bu5hm4n, eagleeye, akanad, SanghyeonLee, woohyun
Subscribers: cedric, #reviewers, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D8559
Change-Id: I5401c827bb9c7b46e675e01c57e9ca8508580b89