No longer used, out-of-date (8)
I believe the answer is:
obsolete
This clue is a double definition.
'no longer used' is the first definition.
(I've seen this in another clue)
'out-of-date' is the second definition.
(synonyms)
(Other definitions for obsolete that I've seen before include "Out-of-date" , "No longer produced or used" , "Pass" , "being out of practice" , "'No longer used, out of date (8)'" .)