Remove inaccurate statement about the insertion mode and CDATA sections

Author: sirreal

source

@@ -141109,7 +141109,7 @@ dictionary <dfn dictionary>StorageEventInit</dfn> : <span>EventInit</span> {
   frameset</span>", "<span data-x="insertion mode: after after body">after after body</span>", and
   "<span data-x="insertion mode: after after frameset">after after frameset</span>" during the
   course of the parsing, as described in the <span>tree construction</span> stage. The insertion
-  mode affects how tokens are processed and whether CDATA sections are supported.</p>
+  mode affects how tokens are processed.</p>
 
   <div algorithm>
   <p>Several of these modes, namely "<span data-x="insertion mode: in head">in head</span>", "<span