Remove unused/broken functions

functions/common/context.js

@@ -15,18 +15,16 @@
  * limitations under the License.
  */
 
-'use strict';
+"use strict";
 
-const admin = require('firebase-admin');
-const functions = require('firebase-functions');
-const Auth = require('./auth');
-const Datastore = require('./datastore')
+const admin = require("firebase-admin");
+const functions = require("firebase-functions");
+const Datastore = require("./datastore");
 
 // functions.config().firebase is auto-populated with configuration needed to
 // initialize the firebase-admin SDK when deploying via Firebase CLI.
 admin.initializeApp(functions.config().firebase);
 
 const db = new Datastore(admin.firestore());
-const auth = new Auth();
 
-module.exports = {db, auth};
+module.exports = { db };