mv_machine_learning: drop Mediavision dependency from image classification adapter

mv_machine_learning: drop Mediavision dependency from image classification adapter

[Issue type] : code refactoring

Drop Mediavision dependency from adapter class of image classification task
group. There is a use case that pre-trained model file is used in private.
Therefore, the model relevant code cannot be opened. And even such users want
to configure the inference or training engines in their way.

In this case, we need to manage it properly by providing plugin approach of
behavior class. And this patch is a first step for supporting plugin based
behavior class which can be delivered as separate package.

Change-Id: Ibb7d4b5fa292378bbc5ab1fe7f5c8c00406ee3b2
Signed-off-by: Inki Dae <inki.dae@samsung.com>