Can I delete a DeptID Adjustment that I no longer need?

Yes, DeptID Compensation Adjustments can be deleted in HCP by either zeroing out the values in the months or right-clicking over the DeptID Compensation row and selecting Manage DeptID Adjustments -> Delete DeptID Adjustments.  Click Launch from the Delete DeptID Adjustment prompt and OK from the confirmation pop up box. Since DeptID Compensation Adjustments don't actualize the row will be removed from the form.