If you have an Amazon Firestick, you can use the Amazon Firestick File Explorer to delete files. To do this, open the File Explorer on your Firestick and click on the three lines in the top left corner of the screen. This will show you a list of all the files that are currently in your file system. On the right side of this list, you will see a list of files that have been deleted. To delete a file from this list, click on it and then press Delete.