refactor: Use serializer for user model instead of formatJson

packages/backend/src/models/user.js

@@ -143,17 +143,6 @@ class User extends Base {
     },
   });
 
-  $formatJson(json) {
-    json = super.$formatJson(json);
-
-    delete json.password;
-    delete json.deletedAt;
-    delete json.resetPasswordToken;
-    delete json.resetPasswordTokenSentAt;
-
-    return json;
-  }
-
   login(password) {
     return bcrypt.compare(password, this.password);
   }