Remove former from Alek's Editor line

Author: Greg Whitworth

resize-observer-1/Overview.bs

@@ -8,7 +8,7 @@ ED: https://drafts.csswg.org/resize-observer/index.html
 Group: CSSWG
 URL: https://drafts.csswg.org/resize-observer/index.html
 Editor: Greg Whitworth, Microsoft, gwhit@microsoft.com
-Former Editor: Aleks Totic, Google, atotic@google.com
+Editor: Aleks Totic, Google, atotic@google.com
 Abstract: This specification describes an API for observing changes to Element's size.
 </pre>
 <pre class="anchors">