[css-align] Kill issue about overflow/scroll position, as its been discussed in the WG.

Author: tabatkins

css-align/Overview.bs

@@ -574,8 +574,6 @@ Overflow and Scroll Positions</h3>
 		and its content will overflow its main-start edge.
 	</div>
 
-	Issue: This section is under discussion in the WG.
-
 	Issue: This needs to be integrated with overflow-anchor, when the property exists,
 	so that you get the same behavior whether an elements *starts out* overflowing,
 	or is filled element-by-element.

css-align/Overview.html

@@ -690,8 +690,6 @@ <h3 class="heading settled" data-level=4.2 id=overflow-scroll-position><span cla
 		and its content will overflow its main-start edge.
 	</div>
 
-<p class=issue id=issue-9c6c006f><a class=self-link href=#issue-9c6c006f></a>This section is under discussion in the WG.</p>
-
 <p class=issue id=issue-f2f93187><a class=self-link href=#issue-f2f93187></a>This needs to be integrated with overflow-anchor, when the property exists,
 	so that you get the same behavior whether an elements *starts out* overflowing,
 	or is filled element-by-element.</p>
@@ -1290,7 +1288,7 @@ <h2 class="no-num heading settled" id=references><span class=content>References<
 <a href=#issue-511afb43> ↵ </a></div><div class=issue>
 		Transplant example 10 from flexbox.
 
-<a href=#issue-8fcc582f> ↵ </a></div><div class=issue>Need to dfn a better term for this in Grid.<a href=#issue-dda0e769> ↵ </a></div><div class=issue>This section is under discussion in the WG.<a href=#issue-9c6c006f> ↵ </a></div><div class=issue>This needs to be integrated with overflow-anchor, when the property exists,
+<a href=#issue-8fcc582f> ↵ </a></div><div class=issue>Need to dfn a better term for this in Grid.<a href=#issue-dda0e769> ↵ </a></div><div class=issue>This needs to be integrated with overflow-anchor, when the property exists,
 	so that you get the same behavior whether an elements *starts out* overflowing,
 	or is filled element-by-element.<a href=#issue-f2f93187> ↵ </a></div><div class=issue>
 		Should we make <a class=css data-link-for="" data-link-type=maybe href=#valdef-item-position-stretch>stretch</a> actually work on block-level/abspos replaced boxes?