If you want to remove a package from Mobile Device Manager (MDM) software distribution, you can delete it by using MDM Software Distribution Console. The approval state for the package must be Unapproved or Declined before you can delete it.
To delete a package
In the navigation pane, expand Packages, and then select the package group that contains the package you want to delete.
In the details pane, right-click the package and then select Delete.