Thanks for your post.
SQL Backup log shipping jobs are created as SQL Agent jobs in SQL Server. If you want to delete the exiting jobs, then the only way to do it is through the SQL Agent.
If you are happy with the existing log shipping configuration, then you could restart the process by reseeding rather than starting again from scratch.
See the link below for instructions:
http://www.red-gate.com/supportcenter/C ... wledgebase
I hope this helps.