Removes Unused Settings From Game Preferances (#23368)

* Removes all reference of ROLE_NINJA

* By public demand

code/modules/client/preference/preferences.dm

@@ -1,6 +1,5 @@
 GLOBAL_LIST_INIT(special_role_times, list( //minimum age (in days) for accounts to play these roles
 	ROLE_PAI = 0,
-	ROLE_POSIBRAIN = 0,
 	ROLE_GUARDIAN = 0,
 	ROLE_TRAITOR = 7,
 	ROLE_CHANGELING = 14,
@@ -16,8 +15,6 @@ GLOBAL_LIST_INIT(special_role_times, list( //minimum age (in days) for accounts
 	ROLE_SENTIENT = 21,
 	ROLE_ELITE = 21,
 // 	ROLE_GANG = 21,
-	ROLE_NINJA = 21,
-	ROLE_GSPIDER = 21,
 	ROLE_ABDUCTOR = 30
 ))