fix: Remove incorrect line from submission API info web page (ietf-tools#6432)

* Submit can replace

* Empty commit for CI

* revert change to api_submit_info

Author: DavidSchinazi

ietf/templates/submit/api_submission_info.html

@@ -21,7 +21,6 @@ <h1 class="mb-3">Internet-Draft submission API instructions</h1>
     </p>
     <ul>
         <li>Only XML-only uploads are supported, not text or combined.</li>
-        <li>Document replacement information cannot be supplied.</li>
         <li>
             The server expects <code>multipart/form-data</code>, supported by <code>curl</code> but <b>not</b> by <code>wget</code>.
         </li>