[selectors] Remove issue about :any-link naming, now that it's widely implemented. Fixes #2020.

Author: tabatkins

selectors-4/Overview.bs

@@ -1845,8 +1845,6 @@ The Hyperlink Pseudo-class: '':any-link''</h3>
 	equivalent to '':matches(:link, :visited)''.
 
 
-	<p class="issue">Any better name suggestions for this pseudo?
-
 <h3 id="link">
 The Link History Pseudo-classes: '':link'' and '':visited''</h3>
 
@@ -3214,9 +3212,9 @@ Grammar</h2>
 	makes it difficult to indicate that a grammar term can <em>be</em> whitespace.
 	"Omitting" a combinator is actually just specifying the <a>descendant combinator</a>.
 
-	Note: While, per the grammar, 
+	Note: While, per the grammar,
 	<a>pseudo-elements</a> can appear anywhere in a <<compound-selector>>,
-	and a <<compound-selector>> with a <<pseudo-element-selector>> 
+	and a <<compound-selector>> with a <<pseudo-element-selector>>
 	can appear anywhere in a <<complex-selector>>,
 	in practice the <<pseudo-element-selector>> will only match anything
 	if placed at the end of the last <<compound-selector>>