elc_hoversel: Fix to activate accessibility

elc_hoversel: Fix to activate accessibility

Previously, accessibility activate did not work because accessibility
activate method could work only if hover was created before.
However, the hover is created in _activate(), which accessibility
activate method calls after checking the hover.
Therefore, the code checking the hover is removed in accessibility
activate method.

It has been fixed that hoversel button is activated by double tap of
accessibility highlight.

Change-Id: I9cee7ec701a9b0878a1253bf66be21586e2aff9a