Clean up WebUI preferences

PR #17319.

src/webui/www/private/views/preferences.html

@@ -1076,7 +1076,7 @@
             </tr>
             <tr>
                 <td>
-                    <label for="pieceExtentAffinity">QBT_TR(Use piece extent affinity (requires libtorrent >= 1.2.2):)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://libtorrent.org/single-page-ref.html#piece_extent_affinity" target="_blank">(?)</a></label>
+                    <label for="pieceExtentAffinity">QBT_TR(Use piece extent affinity:)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://libtorrent.org/single-page-ref.html#piece_extent_affinity" target="_blank">(?)</a></label>
                 </td>
                 <td>
                     <input type="checkbox" id="pieceExtentAffinity" />
@@ -1175,7 +1175,7 @@
             </tr>
             <tr>
                 <td>
-                    <label for="IDNSupportCheckbox">QBT_TR(Support internationalized domain name (IDN) (requires libtorrent >= 1.2.12):)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#allow_idna" target="_blank">(?)</a></label>
+                    <label for="IDNSupportCheckbox">QBT_TR(Support internationalized domain name (IDN):)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#allow_idna" target="_blank">(?)</a></label>
                 </td>
                 <td>
                     <input type="checkbox" id="IDNSupportCheckbox" />
@@ -1262,7 +1262,7 @@
             </tr>
             <tr>
                 <td>
-                    <label for="maxConcurrentHTTPAnnounces">QBT_TR(Max concurrent HTTP announces (requires libtorrent >= 1.2.7):)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#max_concurrent_http_announces" target="_blank">(?)</a></label>
+                    <label for="maxConcurrentHTTPAnnounces">QBT_TR(Max concurrent HTTP announces:)QBT_TR[CONTEXT=OptionsDialog]&nbsp;<a href="https://www.libtorrent.org/reference-Settings.html#max_concurrent_http_announces" target="_blank">(?)</a></label>
                 </td>
                 <td>
                     <input type="text" id="maxConcurrentHTTPAnnounces" style="width: 15em;" />