How can I remove mongo and ddp-server packages after updating to meteor 1.2?

Hi guys!

After reading ‘Meteor 1.2 Upgrade Guide’ a found that I can remove some platform packages that are not needed in my app, such as ‘mongo’ and ‘ddp-server’ but after entering ‘meteor remove mongo’ it says ‘mongo is not in this project’ what i’m doing wrong?

It’s likely because another package you’re using is itself using mongo (or Minimongo).