Remove hasUploadListeners flag

Author: lukewarlow

fetch.bs

@@ -8597,8 +8597,6 @@ method steps are:
         https://github.com/whatwg/dom/issues/1031#issuecomment-1233206400 -->
   </ol>
 
- <li><p>Let <var>hasUploadListeners</var> be false.
-
  <li><p>Let <var>monitor</var> be null.
 
  <li>
@@ -8614,9 +8612,6 @@ method steps are:
    <li><p>[=invoke|Invoke=] <var>monitorCallback</var> with <var>args</var>
    and <code>"rethrow"</code>. If this throws an exception, <a for=/>reject</a> <var>p</var> with it
    and return <var>p</var>.
-
-   <li><p>If one or more <a event><code>requestprogress</code></a> event listeners were added to
-   <var>monitor</var>, then set <var>hasUploadListeners</var> to true.
   </ol>
 
  <li><p>Let <var>requestBodyTransmitted</var> be 0.
@@ -8635,7 +8630,7 @@ method steps are:
 
    <li><p>If not roughly 50ms has passed since these steps were last invoked, then return.
 
-   <li><p>If <var>hasUploadListeners</var> is true, then <a>fire a progress event</a> named
+   <li><p>If <var>monitor</var> is not null, then <a>fire a progress event</a> named
    <a event><code>requestprogress</code></a> at <var>monitor</var> with <var>requestBodyTransmitted</var>
    and <var>requestBodyLength</var>.
   </ol>
@@ -8644,7 +8639,7 @@ method steps are:
   <p>Let <var>processRequestEndOfBody</var> be these steps:
 
   <ol>
-   <li><p>If <var>hasUploadListeners</var> is false, then return.
+   <li><p>If <var>monitor</var> is null, then return.
 
    <li><p><a>Fire a progress event</a> named <a event><code>requestprogress</code></a> at <var>monitor</var>
    with <var>requestBodyTransmitted</var> and <var>requestBodyLength</var>.