remove unnecessary note about http requests

docs/tc53.md

@@ -1,5 +1,5 @@
 <p></p>
-<p id="subtitle">Ecma TC53 <b>DRAFT</b> / March 31, 2023</p>
+<p id="subtitle">Ecma TC53 <b>DRAFT</b> / April 3, 2023</p>
 <p id="title">ECMAScript® Embedded Systems API Specification, 2nd Edition</p>
 
 <img src="../web/assets/ecma-logo.svg">
@@ -1988,7 +1988,7 @@ In addition to the behaviors defined in the Base Class Pattern, all outstanding
 
 ### `request` method
 
-Queues an HTTP request described by the required options object, the sole argument. Multiple requests may be pending simultaneously. The requests may operate in serial or parallel and may complete in any order.
+Queues an HTTP request described by the required options object, the sole argument.
 
 The options object supports the following properties: