Revert "12/21 modernizations from TG live"

code/controllers/master.dm

@@ -35,8 +35,6 @@ var/CURRENT_TICKLIMIT = TICK_LIMIT_RUNNING
 	var/init_time
 	var/tickdrift = 0
 
-	var/sleep_delta
-
 	var/make_runtime = 0
 
 	// Has round started? (So we know what subsystems to run)
@@ -67,11 +65,6 @@ var/CURRENT_TICKLIMIT = TICK_LIMIT_RUNNING
 	// Tell qdel() to Del() this object.
 	return QDEL_HINT_HARDDEL_NOW
 
-/datum/controller/master/proc/Shutdown()
-	processing = FALSE
-	for(var/datum/subsystem/ss in subsystems)
-		ss.Shutdown()
-
 // Returns 1 if we created a new mc, 0 if we couldn't due to a recent restart,
 //	-1 if we encountered a runtime trying to recreate it
 /proc/Recreate_MC()
@@ -172,8 +165,8 @@ var/CURRENT_TICKLIMIT = TICK_LIMIT_RUNNING
 	message_admins("MC crashed or runtimed, restarting")
 	var/rtn2 = Recreate_MC()
 	if (rtn2 <= 0)
-		log_game("Failed to recreate MC (Error code: [rtn2]), it's up to the failsafe now")
-		message_admins("Failed to recreate MC (Error code: [rtn2]), it's up to the failsafe now")
+		log_game("Failed to recreate MC (Error code: [rtn2]), its up to the failsafe now")
+		message_admins("Failed to recreate MC (Error code: [rtn2]), its up to the failsafe now")
 		Failsafe.defcon = 2
 
 // Main loop.
@@ -287,7 +280,6 @@ var/CURRENT_TICKLIMIT = TICK_LIMIT_RUNNING
 
 		iteration++
 		last_run = world.time
-		src.sleep_delta = MC_AVERAGE_FAST(src.sleep_delta, sleep_delta)
 		sleep(world.tick_lag * (processing + sleep_delta))