Deleting forms in PTO entails deleting the input for a particular form. Sometimes, the entries are input on a tab, which can be easily deleted by clicking on the x on the tab. Other times, as for F.8379, you'd need to remove the input on each of the lines on the input screen (Miscellaneous Forms > Injured Spouse Allocation (8379)).
A fine is a tax for doing wrong. A tax is a fine for doing well.