Minor changes

- Changes asteroid wall sprites.
- Gives miners a styptic patch.
- Removes code that was previously commented out related to the
stationary mining drills.

code/controllers/master_controller.dm

@@ -40,7 +40,6 @@ datum/controller/game_controller
 	var/last_thing_processed
 
 	var/list/shuttle_list	                    // For debugging and VV
-	//var/datum/ore_distribution/asteroid_ore_map // For debugging and VV.
 
 	var/global/datum/garbage_collector/garbageCollector
 
@@ -119,11 +118,6 @@ datum/controller/game_controller/proc/setup_objects()
 		else if(istype(U, /obj/machinery/atmospherics/unary/vent_scrubber))
 			var/obj/machinery/atmospherics/unary/vent_scrubber/T = U
 			T.broadcast_status()
-/*
-	//Create the mining ore distribution map.
-	asteroid_ore_map = new /datum/ore_distribution()
-	asteroid_ore_map.populate_distribution_map()
-*/
 
 	//Set up roundstart seed list.
 	//populate_seed_list()