Interface Efl.Player has media player's all possible methods.
However, efl's image, video, and animation classes implement Efl.Player.
As a result, efl's image, video, and animation classes implement just
some of the methods of Efl.Player.
Since basically a class that implements an interface must implement all
the methods of the interface, it seems that either interface Efl.Player
has too many methods or implementing interface Efl.Player is not
This patch removes the implementation of the interface Efl.Player.