remove rdocs light from layout

Author: Ludovic Vannoorenberghe

views/layout.ejs

@@ -94,7 +94,6 @@
     <script src="/js/dependencies/async_loader.js"></script>
     <script src="/js/dependencies/highlight.pack.js"></script>
     <script src="/js/dependencies/highlightjs-line-numbers.js"></script>
-    <script src="/js/dependencies/rdocs-light.min.js"></script>
     <script src="/js/dependencies/rstudio_navigator.js"></script>
     <script src="/js/dependencies/rstudio_requests.js"></script>
     <script src="/js/helpers/boot.js"></script>