Remove the note for the upgrade step

Author: meacer

fetch.bs

@@ -4586,13 +4586,7 @@ steps:
 
  <li><p><a>Upgrade <var>request</var> to a potentially trustworthy URL, if appropriate</a>.
 
- <li>
-  <p>Optionally, run <a>upgrade an HTTP request</a> algorithm on <var>request</var>.
-
-  <p class=note>HTTPS upgrading only applies to requests with <a>HTTP(S) scheme</a>s, but it's done
-  in <a>main fetch</a> instead of <a>HTTP fetch</a> to ensure that
-  <a>upgrade a mixed content <var>request</var> to a potentially trustworthy URL, if appropriate</a>
-  step runs next and applies to the upgraded request.
+ <li><p>Optionally, run <a>upgrade an HTTP request</a> algorithm on <var>request</var>.
 
  <li><p><a>Upgrade a mixed content <var>request</var> to a potentially trustworthy URL, if appropriate</a>.