evas/elm: Remove function group_resize

evas/elm: Remove function group_resize

This is an override of efl_gfx_size_set. Same as before, the
order of operations matter so it is possible that a corner
case will break. In particular, legacy code was:
 - intercept
 - smart resize (do stuff), super, super, super
 - evas object resize

The new code is more like:
 - intercept
 - super, super, super, evas object resize
 - do stuff

But unfortunately this broke elm_widget (read: all widgets) as
the internal resize was done before the object resize. So,
inside the resize event cb, the resize_obj size would not match
the smart object size. >_<