How to delete a content deployment job by using Windows PowerShell in SharePoint 2010

To delete a content deployment job by using Windows PowerShell

• Verify that you meet the following minimum requirements:
• See Add-SPShellAdmin.
• On the Start menu, click Administrative Tools.
• Click SharePoint 2010 Management Shell.
• From the Windows PowerShell command prompt (that is, PS C:\>), type the following command and press ENTER:
• Remove-SPContentDeploymentJob -Identity <GUID, name or a valid SPContentDeploymentJob object of the job to be deleted>

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