You can use the file browser in the Import Image menu to remove image files, including soft-imported image files, from the filesystem.

To remove media files:

1. From the Library menu, click Import Image and select a destination reel.
2. Display the directory containing the files that you want to remove.
3. Select the files.
4. Click Remove, then click Confirm.
   NoteIf you remove soft-imported files, the source media is not deleted; only the reference to the clip is deleted.