Remove unused method: User#customers.
Remove unused method: User#customers.

rafaspinola/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,digitalnatives/jobsworth,ari/jobsworth,webstream-io/jobsworth,webstream-io/jobsworth,rafaspinola/jobsworth,webstream-io/jobsworth,rafaspinola/jobsworth,webstream-io/jobsworth,rafaspinola/jobsworth,digitalnatives/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,digitalnatives/jobsworth,xuewenfei/jobsworth,ari/jobsworth,ari/jobsworth,ari/jobsworth,xuewenfei/jobsworth