[selectors] Remove unneeded heading.

--HG--
extra : rebase_source : aebb09d2161fbb1b7d5b6afe52cf31c6662ca001

Author: tabatkins

selectors/Overview.html

@@ -443,9 +443,6 @@ <h2 class="no-num no-toc" id=contents>Table of Contents</h2>
 
    <li><a href="#formal-syntax"><span class=secno>16. </span> Formal
     Syntax</a>
-    <ul class=toc>
-     <li><a href="#grammar"><span class=secno>16.1. </span> Grammar</a>
-    </ul>
 
    <li><a href="#profiling"><span class=secno>17. </span> Profiles</a>
     <ul class=toc>
@@ -3826,8 +3823,6 @@ <h2 id=specificity><span class=secno>15. </span> Calculating a selector's
 
   <h2 id=formal-syntax><span class=secno>16. </span> Formal Syntax</h2>
 
-  <h3 id=grammar><span class=secno>16.1. </span> Grammar</h3>
-
   <p> The grammar below defines the syntax of Selectors. It is applied to a
    stream of tokens, as returned by the tokenizer defined in <a
    href="#CSS3SYN" rel=biblioentry>[CSS3SYN]<!--{{!CSS3SYN}}--></a>. It is

selectors/Overview.src.html

@@ -2780,9 +2780,6 @@ <h2 id="specificity">
 <h2 id="formal-syntax">
 Formal Syntax</h2>
 
-<h3 id="grammar">
-Grammar</h3>
-
   <p>
     The grammar below defines the syntax of Selectors.
     It is applied to a stream of tokens,