Remove properties related to highlight speed

Remove properties related to highlight speed

ListView should only have duration-type properties (i.e.
highlightMoveDuration and highlightResizeDuration) as it's unnecessary
to have both duration and speed properties for the highlight animation.
(PathView and GridView only have the duration-related properties.)

Change-Id: I1b94599e3e89afe6488ce2a882c2802354a859fe
Reviewed-by: Martin Jones <martin.jones@nokia.com>