module SidekiqScheduler::Client

def remove_all_delayed_from_queue(queue, klass, *args)

through the delayed queues of all timestamps
This method can be very expensive since it needs to scan

Returns the number of jobs removed

Sidekiq::Client.remove_all_delayed('foo', MyWorker, 'foo', 1, :bat => 'bar')
Example usage: 
def remove_all_delayed_from_queue(queue, klass, *args)
  count = 0
  item = {'class' => klass.to_s, 'args' => args}
  item['queue'] = queue.to_s if queue
  search = MultiJson.encode(item)
  Array(Sidekiq.redis { |r| r.keys("delayed:*") }).each do |key|
    count += Sidekiq.redis { |r| r.lrem(key, 0, search) }
  end
  count
end