Editorial: remove redundant timingInfo variables

Closes #1522.

Author: noamr

fetch.bs

@@ -4821,8 +4821,6 @@ these steps:
 
  <li><p>Let <var>actualResponse</var> be null.
 
- <li><p>Let <var>timingInfo</var> be <var>fetchParams</var>'s <a for="fetch params">timing info</a>.
-
  <li>
   <p>If <var>request</var>'s <a>service-workers mode</a> is "<code>all</code>", then:
 
@@ -5408,8 +5406,6 @@ run these steps:
 
     <ol>
      <li>
-      <p>Let <var>timingInfo</var> be <var>fetchParams</var>'s <a for="fetch params">timing info</a>.
-
       <p>Set <var>storedResponse</var> to the result of selecting a response from the
       <var>httpCache</var>, possibly needing validation, as per the
       "<a href=https://datatracker.ietf.org/doc/html/rfc7234#section-4>Constructing Responses from Caches</a>"