Remove resolved issues

Author: jakearchibald

css-view-transitions-1/Overview.bs

@@ -488,8 +488,6 @@ callback UpdateDOMCallback = Promise<any> ();
 
         Note: The process continues in [=perform an old capture=] which is executed at the next [=rendering opportunity=].
 
-        Issue: Waiting on [html/8469](https://github.com/whatwg/html/pull/8468) to reference "rendering opportunity".
-
     1. Return |transition|.
 </div>
 
@@ -647,8 +645,6 @@ The {{ViewTransition/domUpdated}} [=getter steps=] are to return [=this's=] [=Vi
         author before prepare to be presented to the user. This is also the content
         captured in snapshots.
 
-        Issue: Waiting on [html/8469](https://github.com/whatwg/html/pull/8468) to reference "rendering opportunity".
-
     Note: These steps will be added to the [=update the rendering=] in the HTML spec.
         As such, the prose style is written to match other steps in that algorithm.
 </div>