feat(api): decouple api from curriculum (#40703)

api-server/server/models/about.js

@@ -1,26 +0,0 @@
-import { createActiveUsers } from '../utils/about.js';
-
-module.exports = function(About) {
-  const activeUsers = createActiveUsers();
-  let activeUsersForRendering = 0;
-  About.getActiveUsers = async function getActiveUsers() {
-    // converting to promise automatically will subscribe to Observable
-    // initiating the sequence above
-    const usersActive = await activeUsers.toPromise();
-    activeUsersForRendering = usersActive;
-    return usersActive;
-  };
-
-  About.getActiveUsersForRendering = () => activeUsersForRendering;
-
-  About.remoteMethod('getActiveUsers', {
-    http: {
-      path: '/get-active-users',
-      verb: 'get'
-    },
-    returns: {
-      type: 'number',
-      arg: 'activeUsers'
-    }
-  });
-};