Remove extra manual upgrade steps from 3.5 and earlier (Will-fix: #15427)

wiki/src/upgrade/tails.mdwn

@@ -50,30 +50,6 @@ copied.</p>
 1. Choose <span class="guilabel">Use a downloaded Tails ISO
    image</span>.
 
-   <a id="3.5"></a>
-
-   <div class="bug">
-
-   <p>If you are doing a manual upgrade from Tails 3.2, 3.3, 3.4, or 3.5, it is only possible to select an
-   ISO image when running Tails in English. For other languages, the
-   file chooser button remains inactive:</p>
-
-   [[!img news/version_3.5/broken-file-chooser.png link="no"]]
-
-   <p>To do a manual upgrade from Tails 3.2, 3.3, 3.4, or 3.5, you can either:</p>
-
-   <ul>
-     <li>Restart Tails in English.</li>
-
-     <li>Start <span class="application">Tails Installer</span> in
-     English from the command line:
-
-     <pre>LANG=en_US tails-installer</pre>
-     </li>
-   </ul>
-
-   </div>
-
 1. Use the <span class="guilabel">Target Device</span> drop-down list to
    specify the intermediary USB stick.