You may not want to use the Delete Job button if you are deleting an active job that repeats at automatic intervals (determined when you create the job). The Delete Job button interrupts and removes the job completely from the queue. As a result, the job is not rescheduled for its next automatic interval. You will have to recreate the job if you did not save it to a script file.
If you are a queue user, you can only delete jobs that you submitted. A queue operator can delete all jobs.
To delete a job:
After confirming, the job is removed from the Job Queue list.