Removes Unused Settings From Game Preferances (#23368)

* Removes all reference of ROLE_NINJA

* By public demand

code/game/jobs/job_exp.dm

@@ -3,7 +3,6 @@
 GLOBAL_LIST_INIT(role_playtime_requirements, list(
 	// NT ROLES
 	ROLE_PAI = 0,
-	ROLE_POSIBRAIN = 5, // Same as cyborg job.
 	ROLE_SENTIENT = 5,
 	ROLE_ERT = 40, // High, because they're team-based, and we want ERT to be robust
 	ROLE_DEATHSQUAD = 50, // Higher, see ERT and also they're OP as heck
@@ -17,14 +16,12 @@ GLOBAL_LIST_INIT(role_playtime_requirements, list(
 	ROLE_VAMPIRE = 5,
 	ROLE_BLOB = 20,
 	ROLE_REVENANT = 3,
-	ROLE_NINJA = 20,
 	ROLE_MORPH = 5,
 	ROLE_DEMON = 5,
 	ROLE_ELITE = 5,
 
 	// DUO ANTAGS
 	ROLE_GUARDIAN = 20,
-	ROLE_GSPIDER = 5,
 
 	// TEAM ANTAGS
 	// Higher numbers here, because they require more experience to be played correctly

code/game/objects/items/weapons/explosives.dm

@@ -101,8 +101,6 @@
 				message_say = "FOR THE HIVE!"
 			else if(role == ROLE_CULTIST)
 				message_say = "FOR NARSIE!"
-			else if(role == ROLE_NINJA)
-				message_say = "FOR THE CLAN!"
 			else if(role == ROLE_WIZARD)
 				message_say = "FOR THE FEDERATION!"
 			else if(role == ROLE_REV || role == "head revolutionary")