[css-position-3] Remove the reference to sections we're no longer replacing.

Author: tabatkins

css-position-3/Overview.bs

@@ -150,12 +150,10 @@ Introduction</h2>
 <h3 id="placement">
 Module Interactions</h3>
 
-	This module replaced and extends the positioning scheme features defined in
-	[[!CSS2]] sections:
+	This module replaces and extends the [=positioning scheme=] features 
+	defined in [[!CSS2]] sections:
 
 	<ul>
-		<li>
-		<a href="https://www.w3.org/TR/CSS2/visuren.html#viewport">9.1.1 The viewport</a>
 		<li>
 		<a href="https://www.w3.org/TR/CSS2/visuren.html#containing-block">9.1.2 Containing blocks</a>
 		<li>
@@ -169,8 +167,6 @@ Module Interactions</h3>
 		<li>
 		<a href="https://www.w3.org/TR/CSS2/visuren.html#comparison">9.8 Comparison of normal flow, floats, and absolute positioning</a>
 		<li>
-		<a href="https://www.w3.org/TR/CSS2/visuren.html#layers">9.9 Layered presentation</a>
-		<li>
 		<a href="https://www.w3.org/TR/CSS2/visudet.html#containing-block-details">10.1 Definition of "containing block"</a>
 		<li>
 		<a href="https://www.w3.org/TR/CSS2/visudet.html#abs-non-replaced-width">10.3.7 Absolutely positioned, non-replaced elements</a>
@@ -180,13 +176,8 @@ Module Interactions</h3>
 		<a href="https://www.w3.org/TR/CSS2/visudet.html#abs-non-replaced-height">10.6.4 Absolutely positioned, non-replaced elements</a>
 		<li>
 		<a href="https://www.w3.org/TR/CSS2/visudet.html#abs-replaced-height">10.6.5 Absolutely positioned replaced elements</a>
-		<li>
-		<a href="https://www.w3.org/TR/CSS2/visudet.htmlhttps://www.w3.org/TR/CSS2/visudet.html#root-height">10.6.7 Auto heights for block formatting context roots</a>
-		<li>
-		<a href="https://www.w3.org/TR/CSS2/zindex.html">Appendix E. Elaborate description of Stacking Contexts</a>
 	</ul>
 
-<!-- End section" Module Interactions -->
 
 <h3 id="values">
 Value Definitions</h3>