More /vg/lighting tweaks (#884)

code/controllers/subsystem/lighting.dm

@@ -36,18 +36,10 @@ SUBSYSTEM_DEF(lighting)
 	for (i in 1 to GLOB.lighting_update_lights.len)
 		var/datum/light_source/L = GLOB.lighting_update_lights[i]
 
-		if (L.check() || QDELETED(L) || L.force_update)
-			L.remove_lum()
-			if (!QDELETED(L))
-				L.apply_lum()
+		L.update_corners()
 
-		else if (L.vis_update) //We smartly update only tiles that became (in) visible to use.
-			L.smart_vis_update()
+		L.needs_update = LIGHTING_NO_UPDATE
 
-		L.vis_update   = FALSE
-		L.force_update = FALSE
-		L.needs_update = FALSE
-		
 		if(init_tick_checks)
 			CHECK_TICK
 		else if (MC_TICK_CHECK)