Removes the only Null toolspeed (#67890)

all items have a toolspeed this could cause an error somewhere

code/game/objects/items/tools/wrench.dm

@@ -89,7 +89,6 @@
 	attack_verb_continuous = list("devastates", "brutalizes", "commits a war crime against", "obliterates", "humiliates")
 	attack_verb_simple = list("devastate", "brutalize", "commit a war crime against", "obliterate", "humiliate")
 	tool_behaviour = null
-	toolspeed = null
 
 /obj/item/wrench/combat/Initialize(mapload)
 	. = ..()
@@ -111,10 +110,8 @@
 
 	if(active)
 		tool_behaviour = TOOL_WRENCH
-		toolspeed = 1
 	else
 		tool_behaviour = initial(tool_behaviour)
-		toolspeed = initial(toolspeed)
 
 	balloon_alert(user, "[name] [active ? "active, woe!":"restrained"]")
 	playsound(user ? user : src, active ? 'sound/weapons/saberon.ogg' : 'sound/weapons/saberoff.ogg', 5, TRUE)