code: public void unschedule(final org.easybatch.core.job.Job job) throws JobSchedulerException {
          String jobName = job.getName();
          LOGGER.info("Unscheduling job ''{}'' ", jobName);
          try {
              scheduler.unscheduleJob(TriggerKey.triggerKey(TRIGGER_NAME_PREFIX + jobName));
          } catch (SchedulerException e) {
              throw new JobSchedulerException(format("Unable to unschedule job '%s'", jobName), e);
          }
      }
docs: Unschedule the given job.
  
  @param job the job to unschedule
  @throws JobSchedulerException thrown if an exception occurs during job unscheduling