Revert "Merge pull request +3379 from c9/rev-pubsub"
Revert "Merge pull request +3379 from c9/rev-pubsub"

This reverts commit 68eb2d38e38f6296f67b19e1f8b0b17ca15983fd, reversing
changes made to 10c6e949edf2c8948b5c4f683afab1711e1c907f.
c9/c9.ide.pubsub