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/items/weapons/tanks/tanks.dm

@@ -63,17 +63,6 @@
 				descriptive = "cold"
 		user << "<span class='notice'>\The [src] feels [descriptive].</span>"
 
-/obj/item/weapon/tank/blob_act()
-	if(prob(50))
-		var/turf/location = src.loc
-		if (!( istype(location, /turf) ))
-			qdel(src)
-
-		if(src.air_contents)
-			location.assume_air(air_contents)
-
-		qdel(src)
-
 /obj/item/weapon/tank/attackby(obj/item/weapon/W as obj, mob/user as mob)
 	..()
 	if (istype(src.loc, /obj/item/assembly))

code/game/objects/items/weapons/weaponry.dm

@@ -213,10 +213,6 @@
 	health = 0
 	healthcheck()
 
-/obj/effect/energy_net/blob_act()
-	health = 0
-	healthcheck()
-
 /obj/effect/energy_net/attack_hand(var/mob/user)
 
 	var/mob/living/carbon/human/H = user