No need to set the guard twice

Author: jakearchibald

fetch.bs

@@ -6404,18 +6404,9 @@ constructor steps are:
 
    <li><p>Empty <a>this</a>'s <a for=Request>headers</a>'s <a for=Headers>header list</a>.
 
-   <li>
-    <p>If <a>this</a>'s <a for=Request>request</a>'s <a for=request>mode</a> is
-    "<code>no-cors</code>", then:
-
-    <ol>
-     <li><p>If <a>this</a>'s <a for=Request>request</a>'s <a for=request>method</a> is not a
-     <a>CORS-safelisted method</a>, then <a>throw</a> a {{TypeError}}.
-
-     <li><p>Set <a>this</a>'s <a for=Request>headers</a>'s <a for=Headers>guard</a> to
-     "<code>request-no-cors</code>".
-    </ol>
-   </li>
+   <li><p>If <a>this</a>'s <a for=Request>request</a>'s <a for=request>mode</a> is
+   "<code>no-cors</code>" and <a>this</a>'s <a for=Request>request</a>'s <a for=request>method</a>
+   is not a <a>CORS-safelisted method</a>, then <a>throw</a> a {{TypeError}}.
 
    <li><p>If <var>headers</var> is a <code>Headers</code> object, then <a for=list>for each</a>
    <var>header</var> in its <a for=Headers>header list</a>, <a for=Headers>append</a>