Revert "[MIRROR] Replace all secondary flags with bitflags stored in the flags_2 var" (#2457)

ok you know what yeah i think i'll properly mirror https://github.com/Citadel-Station-13/Citadel-Station-13/pull/2411

code/controllers/subsystem/npcpool.dm

@@ -5,7 +5,7 @@
 
 SUBSYSTEM_DEF(npcpool)
 	name = "NPC Pool"
-	flags_1 = SS_POST_FIRE_TIMING|SS_NO_INIT|SS_BACKGROUND
+	flags = SS_POST_FIRE_TIMING|SS_NO_INIT|SS_BACKGROUND
 	priority = 20
 	runlevels = RUNLEVEL_GAME | RUNLEVEL_POSTGAME
 
@@ -134,12 +134,12 @@ SUBSYSTEM_DEF(npcpool)
 
 		if(facCount == 1 && helpProb)
 			helpProb = 100
-
+	
 		if(prob(helpProb) && candidate.takeDelegate(check,FALSE))
 			--canBeUsed.len
 			candidate.eye_color = "yellow"
 			candidate.update_icons()
-
+			
 		if(!currentrun.len || MC_TICK_CHECK)	//don't change SS state if it isn't necessary
 			return