chore: remove unnecessary links

ui/core/app/templates/application.hbs

@@ -33,8 +33,6 @@
     <Rose::Nav::Primary @title={{t 'dev.title'}} as |nav|>
       <nav.link @route="orgs" class="active">{{t 'dev.item-name'}}</nav.link>
       <nav.link @route="index">{{t 'dev.item-name'}}</nav.link>
-      <nav.link @route="index">{{t 'dev.item-name'}}</nav.link>
-      <nav.link @route="index">{{t 'dev.item-name'}}</nav.link>
     </Rose::Nav::Primary>
   </page.sidebar>