How to delete a content deployment job by using Central Administration in SharePoint 2010

To delete a content deployment job by using Central Administration

• Verify that you have the following administrative credentials:
• You must be a member of the Farm Administrators group on the Central Administration server.
• On the Central Administration Web site, in the General Application Settings section, click Configure content deployment paths and jobs.
• On the Manage Content Deployment Paths and Jobs page, on the menu for the job that you want to delete, click Delete.
• Click OK in the message box that asks whether you want to proceed with the deletion.

Ref: http://technet.microsoft.com/en-us/library/cc262075(v=office.14).aspx#Section8