Updates blob

Remains of player blob axed.
blob_act() axed. Blob now has an arbitary set of things it can attack.
It will flow over everything else. Blob has an awful tendency to destroy
non-craftables.
Will test more tomorrow.
Blob will now attack mechs.
Fixes #8106.
Fixes #10705.

code/game/objects/structures/displaycase.dm

@@ -34,15 +34,6 @@
 	src.healthcheck()
 	return
 
-
-/obj/structure/displaycase/blob_act()
-	if (prob(75))
-		new /obj/item/weapon/material/shard( src.loc )
-		if (occupied)
-			new /obj/item/weapon/gun/energy/captain( src.loc )
-			occupied = 0
-		qdel(src)
-
 /obj/structure/displaycase/proc/healthcheck()
 	if (src.health <= 0)
 		if (!( src.destroyed ))