refactor: remove nanoseconds conversion

src/aura_engine/scheduling/api.py

@@ -252,13 +252,7 @@ class ApiFetcher(threading.Thread):
                         title=entry.file.metadata.title,
                     )
 
-                # Convert nanoseconds to seconds
-                # TODO remove after tank is using seconds for duration
-                duration: float = None
-                if entry.duration:
-                    duration = SU.nano_to_seconds(entry.duration)
-
-                item = PlaylistItem(entry.uri, duration, 100, metadata)
+                item = PlaylistItem(entry.uri, entry.duration, 100, metadata)
 
                 # "Hidden Functionality" to feed engine with M3U playlists
                 # via Tank's "Stream" playlist item type