Removed unused SSD subsystem code

Removes the enabled check, warning time, getting ckey, logging, and alerting in chat. These features were unused.

modular_splurt/code/controllers/subsystem/afk.dm

@@ -1,7 +1,5 @@
-#define AFK_MINUTES_WARN	30 MINUTES // NOT IMPLEMENTED
 #define AFK_MINUTES_CRYO	40 MINUTES
 #define AFK_MINUTES_TEXT	AFK_MINUTES_WARN/600
-#define AFK_CRYO_ENABLED	TRUE
 
 SUBSYSTEM_DEF(afk)
 	name = "AFK Watcher"
@@ -10,9 +8,7 @@ SUBSYSTEM_DEF(afk)
 	flags = SS_BACKGROUND
 
 /datum/controller/subsystem/afk/Initialize()
-	// Check if this should run
-	if(!AFK_CRYO_ENABLED)
-		flags |= SS_NO_FIRE
+	// Currently, this always runs by default
 	return ..()
 
 /datum/controller/subsystem/afk/fire()
@@ -25,23 +21,12 @@ SUBSYSTEM_DEF(afk)
 		// Check if client meets the time requirement
 		if(!(afk_time > AFK_MINUTES_CRYO))
 			continue
-
-		// Define ckey
-		var/client/cryo_client = cryo_mob.ckey
 		
-		// Log this occurrence
-		log_admin("[key_name(cryo_client)] has been sent to cryo by the AFK Watcher subsystem after being AFK for [AFK_MINUTES_TEXT] minutes.")
-
-		// Alert user
-		to_chat(cryo_client, "<span class='danger'>You have been sent to cryo for exceeding the [AFK_MINUTES_TEXT] minute AFK time limit.</span>")
-
 		// Send to cryo
 		cryoMob(cryo_mob, effects = TRUE)
 		
 		// Remove from SSD list
 		GLOB.ssd_mob_list -= cryo_mob
 
-#undef AFK_MINUTES_WARN
 #undef AFK_MINUTES_CRYO
 #undef AFK_MINUTES_TEXT
-#undef AFK_CRYO_ENABLED