Removes some unneeded debug logs (#3070)

Removes some unneeded debug logs.

code/controllers/subsystems/arrivals.dm

@@ -38,7 +38,6 @@
 	if (!shuttle.location)
 		return
 
-	log_debug("SSarrivals: [M] has entered arrival shuttle hotzone.")
 
 	if (istype(M))
 		current_mobs += SOFTREF(M)
@@ -50,7 +49,6 @@
 
 /datum/controller/subsystem/arrivals/proc/on_hotzone_exit(mob/living/M)
 	current_mobs -= SOFTREF(M)
-	log_debug("SSarrivals: [M] has exited arrival shuttle hotzone.")
 
 //called when the shuttle has arrived.
 

code/controllers/subsystems/processing/shuttle.dm

@@ -43,7 +43,8 @@ var/datum/controller/subsystem/processing/shuttle/shuttle_controller
 	//shuttle.dock_target_station = "cargo_bay"
 	shuttles["Escape"] = shuttle
 	START_PROCESSING(shuttle_controller, shuttle)
-	log_debug("Escape shuttle [shuttle ? "exists." : "DOES NOT EXIST!"]")
+	if(!shuttle)
+		log_debug("Escape shuttle does not exist!")
 
 	shuttle = new/datum/shuttle/ferry/escape_pod()
 	shuttle.location = 0