[css-align] Remove Tracker link.

Author: tabatkins

css-align/Overview.bs

@@ -14,7 +14,6 @@ Previous Version: http://www.w3.org/TR/2014/WD-css-align-3-20141218/
 Previous Version: http://www.w3.org/TR/2013/WD-css3-align-20130514/
 Previous Version: http://www.w3.org/TR/2012/WD-css3-align-20120612/
 Abstract: This module contains the features of <a href="http://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 [[CSS3TEXT]] and [[CSS3LINE]].)
-Issue Tracking: Tracker http://www.w3.org/Style/CSS/Tracker/products/39
 Link Defaults: selectors-3 (dfn) first formatted line, css-flexbox-1 (dfn) flex line, css-multicol-1 (dfn) multi-column element, css-fonts-3 (dfn) first available font, css21 (property) max-width/max-height/min-width/min-height, css-writing-modes-3 (dfn) dominant baseline, css-position-3 (property) left, css-cascade-3 (value) initial
 Ignored Terms: table cell, stretch
 At Risk: ''last-baseline''