Prevent quick scrub when dragging up

When leaving the touch slop in the perpendicular direction of quick
scrub, remove the timeout to start quickscrub so launcher can continue
to handle touch events.

Bug: 67957962
Bug: 70180755
Test: manual - drag up with quick step enabled
Change-Id: Icb5fcd992b17ac05402b83543115e6ab34475d2f