Removing Repeatable job does not emit a Removed QueueEvent

[ericellb]

When removing a repeatable job using either removeRepeatable or removeRepeatableByKey, it does not emit a removed event on the QueueEvent class.

Here is a small example that can repro the issue.

// Register handler for removed
queueEvents.on('removed', () => {
  // No removal event is fired
});

// Create a repeatable job
queue.add('someJob', { repeat: { cron: '* * * * *' } });

// Remove the repeatable job
queue.removeRepeatable('someJob',  { repeat: { cron: '* * * * *' } });

When looking at the lua script removeRepeatable-2.lua It does not seem like the removed event is being sent to redis. However the removeJob script does.

This seems to be an oversight, and that the removeRepeatable-2.lua should also emit a removed event.

https://github.com/OptimalBits/bull/blob/develop/lib/commands/removeRepeatable-2.lua