ENYO-336 Stay original position when model is removed

ISSUE
______
Currently removing model which has lower index than last index of pages makes list to be scrolled to the first index of pages.
But this behavior is not natural. Staying its original position is more acceptable.


CAUSE
______
We intentionally scroll list to top position.

FIx
___
Remove scrollToIndex() call.

  
Enyo-DCO-1.1-Signed-off-by: David Um david.um@lge.com