remove leftover code

files/helpers/cron.py

@@ -47,9 +47,6 @@ def cron_fn(every_5m, every_1d, every_1mo):
 				_award_timers_task()
 				g.db.commit()
 
-				_unpin_expired()
-				g.db.commit()
-
 				_grant_one_year_badges()
 				g.db.commit()
 
@@ -316,22 +313,6 @@ def _award_timers_task():
 	})
 	_process_timer(User.flairchanged, [96], "Your temporary flair-lock has expired. You can now change your flair!")
 
-
-def _unpin_expired():
-	t = int(time.time())
-	pins = []
-
-	for cls in (Post, Comment):
-		pins += g.db.query(cls).options(load_only(cls.id)).filter(cls.stickied_utc < t)
-
-	for pin in pins:
-		pin.stickied = None
-		pin.stickied_utc = None
-		g.db.add(pin)
-
-	if pins:
-		cache.delete_memoized(frontlist)
-
 def _give_marseybux_salary():
 	for u in g.db.query(User).filter(User.admin_level > 0).all():
 		marseybux_salary = u.admin_level * 10000