[css-align-3] Clear out previous version history

Author: fantasai

css-align-3/Overview.bs

@@ -9,20 +9,6 @@ ED: https://drafts.csswg.org/css-align/
 TR: https://www.w3.org/TR/css-align-3/
 Editor: Elika J. Etemad / fantasai, Invited Expert, http://fantasai.inkedblade.net/contact, w3cid 35400
 Editor: Tab Atkins Jr., Google, http://xanthir.com/contact/, w3cid 42199
-Previous Version: https://www.w3.org/TR/2020/WD-css-align-3-20200421/
-Previous Version: https://www.w3.org/TR/2018/WD-css-align-3-20181206/
-Previous Version: https://www.w3.org/TR/2018/WD-css-align-3-20180830/
-Previous Version: https://www.w3.org/TR/2018/WD-css-align-3-20180423/
-Previous Version: https://www.w3.org/TR/2017/WD-css-align-3-20170906/
-Previous Version: https://www.w3.org/TR/2017/WD-css-align-3-20170720/
-Previous Version: https://www.w3.org/TR/2017/WD-css-align-3-20170515/
-Previous Version: https://www.w3.org/TR/2017/WD-css-align-3-20170407/
-Previous Version: https://www.w3.org/TR/2017/WD-css-align-3-20170215/
-Previous Version: https://www.w3.org/TR/2016/WD-css-align-3-20160614/
-Previous Version: https://www.w3.org/TR/2016/WD-css-align-3-20160519/
-Previous Version: https://www.w3.org/TR/2014/WD-css-align-3-20141218/
-Previous Version: https://www.w3.org/TR/2013/WD-css3-align-20130514/
-Previous Version: https://www.w3.org/TR/2012/WD-css3-align-20120612/
 Abstract: This module contains the features of <a href="https://www.w3.org/TR/CSS/">CSS</a> relating to the alignment of boxes within their containers in the various CSS box layout models: block layout, table layout, flex layout, and grid layout. (The alignment of text and inline-level content is defined in [[CSS-TEXT-3]] and [[CSS-INLINE-3]].)
 Ignored Terms: table cell, stretch, static position, static-position containing block, static positions
 At Risk: ''[ first | last ]? baseline''