stop listening on the pending updates channels 10 times

services/document-updater/app/js/DispatchManager.js

@@ -110,10 +110,5 @@ module.exports = DispatchManager = {
     _.times(number, function (shardNumber) {
       return DispatchManager.createDispatcher(RateLimiter, shardNumber).run()
     })
-
-    // run extra dispatchers on old queue while we migrate
-    _.times(number, function () {
-      return DispatchManager.createDispatcher(RateLimiter, 0).run()
-    })
   }
 }