Remove blocking=render from preload/modulepreload links

Fixes whatwg#7896.

source

@@ -25863,15 +25863,10 @@ document.body.appendChild(wbr);</code></pre>
    mode</var>, and <span data-x="concept-script-fetch-options-referrer-policy">referrer
    policy</span> is <var>referrer policy</var>.</p></li>
 
-   <li><p>If <var>el</var> is <span>potentially render-blocking</span>, then
-   <span>block rendering</span> on <var>el</var>.</p></li>
-
    <li><p><span>Fetch a modulepreload module script graph</span> given <var>url</var>,
    <var>destination</var>, <var>settings object</var>, and <var>options</var>. Wait until the
    algorithm asynchronously completes with <var>result</var>.</p>
 
-   <li><p><span>Unblock rendering</span> on <var>el</var>.</p></li>
-
    <li><p>If <var>result</var> is null, then <span data-x="concept-event-fire">fire an event</span>
    named <code data-x="event-error">error</code> at the <code>link</code> element, and
    return.</p></li>
@@ -26399,9 +26394,6 @@ document.body.appendChild(wbr);</code></pre>
    <li><p><span data-x="map set">Set</span> <var>el</var>'s <span>node document</span>'s <span>map
    of preloaded resources</span>[<var>preloadKey</var>] to <var>preloadEntry</var>.</p></li>
 
-   <li><p>If <var>el</var> is <span>potentially render-blocking</span>, then
-   <span>block rendering</span> on <var>el</var>.</p></li>
-
    <li><p>Let <var>type</var> be the empty string.</p></li>
 
    <li><p>If <var>el</var> has a <code data-x="attr-link-type">type</code> attribute, then set
@@ -26435,8 +26427,6 @@ document.body.appendChild(wbr);</code></pre>
        feasibility of changing the behavior has not yet been investigated. See <a
        href="https://github.com/whatwg/html/issues/1142">issue #1142</a>.</p>
      </li>
-
-     <li><p><span>Unblock rendering</span> on <var>el</var>.</p></li>
     </ol>
    </li>
   </ol>