[css-scroll-snap] Step-by-step de-duping of re-snapping requirements. Step 4: Drop reachability requirement, since it's already handled in #unreachable Unreachable Snap Positions

Author: fantasai

css-scroll-snap/Overview.bs

@@ -342,7 +342,7 @@ Scroll Snapping Rules: the 'scroll-snap-type' property {#scroll-snap-type}
     and re-snap if required.
     If the <a>scroll container</a> was <a>snapped</a> before the content change
     and that same snap position still exists
-    (e.g. its associated element was not deleted) and is reachable,
+    (e.g. its associated element was not deleted),
     the scroll container must be re-snapped to that same snap position
     after the content change.