[css-scroll-snap] Remove reference to 'point' being at-risk, as it was already punted to the next level. Fixes #1759.

Author: tabatkins

css-scroll-snap-1/Overview.bs

@@ -19,7 +19,6 @@ Editor: Tab Atkins-Bittner, Google, http://xanthir.com/contact/, w3cid 42199
 Editor: Elika J. Etemad / fantasai, Invited Expert, http://fantasai.inkedblade.net/contact, w3cid 35400
 Abstract: This module contains features to control panning and scrolling behavior with “snap positions”.
 Ignored Terms: containing block chain, scroll position, scrollport
-At Risk: ''point'' value of 'scroll-snap-type'
 At Risk: 'scroll-snap-stop'
 Status Text:
  A test suite and an implementation report will be produced during the