Deleting Jobs in SAP

To delete the Background Job in SAP goto T-Code SE38 and run the report  RSBTCDEL.

For more information kindly visit the link.
http://help.sap.com/saphelp_nwes72/helpdata/en/c4/3a7fef505211d189550000e829fbbd/frameset.htm

and

http://www.guru99.com/how-to-delete-a-background-job.html

also
you can can run the report  RSBTCDEL2