Remove header, it will be added in Fetch-Metadata

Author: noamr

source

@@ -26075,17 +26075,13 @@ document.body.appendChild(wbr);</code></pre>
    link request</span> given <var>options</var>.</p></li>
 
    <li><p>Set <var>request</var>'s <span data-x="concept-request-initiator">initiator</span> to
-   "<code data-x="">prefetch</code>"..</p></li>
+   "<code data-x="">prefetch</code>".</p></li>
 
    <li><p>If <var>request</var> is null, return.</p></li>
 
    <li><p>Set <var>request</var>'s <span data-x="concept-request-initiator">initiator</span>
    to "<code data-x="">prefetch</code>".</p></li>
 
-   <li><p>Set <var>request</var>'s <span
-   data-x="concept-request-header-list">header list</span> to « (`<code>Sec-Purpose</code>`, `<code
-   data-x="">prefetch</code>`) ».</p></li>
-
    <li>
     <p>Let <var>processPrefetchResponse</var> be the following steps given a <span
     data-x="concept-response">response</span> <var>response</var> and null, failure, or a