James Allen
f707783aba
Remove the old pub/sub listener which is no longer used. Also remove the DocsWithPendingUpdates set, which used to track docs waiting to be updated. This was necessary incase messages were missed on the pub/sub channel, so we knew which docs still had pending updates. However, now we use the BLPOP queue, these updates just sit in the queue until a consumer comes back to continue consuming them.