Fix broken search

+ DocFX by default ships with an older version of jQuery, switching to a newer version confuses parts of the DocFX Javascript.

docs/_template/light-dark-theme/partials/scripts.tmpl.partial

@@ -3,10 +3,6 @@
 <script type="text/javascript" src="{{_rel}}styles/docfx.vendor.js"></script>
 <script type="text/javascript" src="{{_rel}}styles/docfx.js"></script>
 <script type="text/javascript" src="{{_rel}}styles/main.js"></script>
-<script
-  src="https://code.jquery.com/jquery-3.3.1.min.js"
-  integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
-  crossorigin="anonymous"></script>
 <script src="//cdn.rawgit.com/noelboss/featherlight/1.7.6/release/featherlight.min.js" type="text/javascript" charset="utf-8"></script>
 <script type="text/javascript" src="{{_rel}}styles/plugin-featherlight.js"></script>
 <script type="text/javascript" src="{{_rel}}styles/styleswitcher.js"></script>