Deletes files from the currently
open archive. A dialog is displayed with options to delete
selected files or the entire archive. If no files are selected
then this option will be disabled. The delete is not reversable,
once deleted files cannot be undeleted.
Note, the 'Entire Archive', option will not delete the actual zip
file itself, only the contents. If you wish to remove the zip
file, use Delete Archive from the File menu.