[EFL] Remove unnecessary smart method since ewk_view_tiled removed

https://bugs.webkit.org/show_bug.cgi?id=127417

Reviewed by Gyuyoung Kim.

Source/WebKit/efl:

pre_render related codes is only for ewk_view_tiled.
In addition, we don't have any requirement to override repaints_process
and scroll_process now.

* ewk/ewk_view.cpp:
(_ewk_view_smart_repaints_process):
(_ewk_view_smart_calculate):
(ewk_view_smart_set):
(ewk_view_scrolls_process):
* ewk/ewk_view.h:

Tools:

* EWebLauncher/main.c:
(on_key_down): Removed shortcut to test pre render.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@162581 268f45cc-cd09-0410-ab3c-d52691b4dbfc