DEV: Fix linting violations (#1345)

Author: davidtaylorhq

assets/javascripts/discourse/components/ai-bot-conversations.gjs

@@ -5,7 +5,6 @@ import { on } from "@ember/modifier";
 import { action } from "@ember/object";
 import { getOwner } from "@ember/owner";
 import didInsert from "@ember/render-modifiers/modifiers/did-insert";
-import willDestroy from "@ember/render-modifiers/modifiers/will-destroy";
 import { service } from "@ember/service";
 import { TrackedArray } from "@ember-compat/tracked-built-ins";
 import $ from "jquery";

assets/javascripts/initializers/ai-conversations-sidebar.js

@@ -30,7 +30,6 @@ export default {
       );
       const appEvents = api.container.lookup("service:app-events");
       const messageBus = api.container.lookup("service:message-bus");
-      const navigationMenu = api.container.lookup("service:navigationMenu");
 
       api.addSidebarPanel(
         (BaseCustomSidebarPanel) =>