How to delete files that won't let you delete them?

[CourtOfTheGrayWaves]

Said file is in the auto category under Source.

 

[Punccline]

What file are you trying to delete, and why? Because it sounds like a really bad idea.

 

[CourtOfTheGrayWaves]

What file are you trying to delete, and why? Because it sounds like a really bad idea.

An old save.

 

[MyOldName]

An old save.

What happens if you go to [Data] -> [Auto], select the file and press [Delete]?

 

[Punccline]

An old save.

Why not just delete it through the in-game save menu?