Bump unification.

All living mobs now use the same generic Bump.
This should make debugging MUCH easier.

Also two lines of other code I found and hated.

code/modules/mob/living/silicon/robot/robot.dm

@@ -610,42 +610,6 @@
 	return 2
 
 
-/mob/living/silicon/robot/Bump(atom/movable/AM as mob|obj, yes)
-	spawn( 0 )
-		if ((!( yes ) || now_pushing))
-			return
-		now_pushing = 1
-		if(ismob(AM))
-			var/mob/tmob = AM
-			if(istype(tmob, /mob/living/carbon/human) && (M_FAT in tmob.mutations))
-				if(prob(20))
-					usr << "<span class='danger'>You fail to push [tmob]'s fat ass out of the way.</span>"
-					now_pushing = 0
-					return
-			if(!(tmob.status_flags & CANPUSH))
-				now_pushing = 0
-				return
-		now_pushing = 0
-		..()
-		if (istype(AM, /obj/machinery/recharge_station))
-			var/obj/machinery/recharge_station/F = AM
-			F.move_inside()
-		if (!istype(AM, /atom/movable))
-			return
-		if (!now_pushing)
-			now_pushing = 1
-			if (!AM.anchored)
-				var/t = get_dir(src, AM)
-				if (istype(AM, /obj/structure/window/full))
-					for(var/obj/structure/window/win in get_step(AM,t))
-						now_pushing = 0
-						return
-				step(AM, t)
-			now_pushing = null
-		return
-	return
-
-
 /mob/living/silicon/robot/triggerAlarm(var/class, area/A, var/O, var/alarmsource)
 	if (stat == 2)
 		return 1