[CLOSED] Deleting the track from the hard drive when deleting from the collection

I want to know if there is a way that I can set Rekordbox to remove the physical track from the hard drive when I remove it from my Collection. My collection is my Master and if I remove a track that I do not want to keep it keeps that the track on the hard drive. Over time my drive has filled up with tracks that I do not want to ever keep. Is there a way to set the delete from collection to actually remove the file, or is there a way to identify what tracks are not linked in the collection? 

Your assistance would be appreciated.