Removes the Arrhythmic Knife (#2957)

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## About The Pull Request
Cruft removal
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documented or this can delay review and even discourage maintainers from
merging your PR! -->

## Why It's Good For The Game
Genuinely cringeworthy shit to still have gimmick weapons that give
people max speed.
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benefit the game. If you can't justify it in words, it might not be
worth adding. -->

## Changelog

:cl: PositiveEntropy
del: Removes the Arrhythmic Knife.
/:cl:

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_maps/RandomRuins/BeachRuins/beach_float_resort.dmm

@@ -237,14 +237,6 @@
 	light_range = 2
 	},
 /area/ruin/beach/float_resort/villa)
-"gr" = (
-/obj/structure/table/wood,
-/obj/structure/curtain/cloth,
-/obj/item/nullrod/tribal_knife,
-/turf/open/floor/wood{
-	light_range = 2
-	},
-/area/ruin/beach/float_resort/villa)
 "gQ" = (
 /obj/structure/flora/ausbushes/genericbush,
 /turf/open/floor/plating/grass/beach,
@@ -2502,7 +2494,7 @@ kp
 kp
 kp
 kp
-gr
+ar
 OH
 OH
 OH

_maps/RandomRuins/WasteRuins/wasteplanet_pandora.dmm

@@ -35,7 +35,6 @@
 /area/ruin/wasteplanet)
 "bL" = (
 /obj/structure/fluff/divine/convertaltar,
-/obj/item/nullrod/tribal_knife,
 /obj/item/clothing/accessory/pandora_hope,
 /turf/open/indestructible/hierophant/two/waste,
 /area/ruin/wasteplanet)

code/game/objects/items/holy_weapons.dm

@@ -671,33 +671,6 @@
 	lefthand_file = 'icons/mob/inhands/weapons/staves_lefthand.dmi'
 	righthand_file = 'icons/mob/inhands/weapons/staves_righthand.dmi'
 
-/obj/item/nullrod/tribal_knife
-	icon_state = "crysknife"
-	item_state = "crysknife"
-	lefthand_file = 'icons/mob/inhands/weapons/swords_lefthand.dmi'
-	righthand_file = 'icons/mob/inhands/weapons/swords_righthand.dmi'
-	name = "arrhythmic knife"
-	w_class = WEIGHT_CLASS_HUGE
-	desc = "They say fear is the true mind killer, but stabbing them in the head works too. Honour compels you to not sheathe it once drawn."
-	sharpness = IS_SHARP
-	slot_flags = null
-	hitsound = 'sound/weapons/bladeslice.ogg'
-	attack_verb = list("attacked", "slashed", "stabbed", "sliced", "torn", "ripped", "diced", "cut")
-	item_flags = SLOWS_WHILE_IN_HAND
-
-/obj/item/nullrod/tribal_knife/Initialize(mapload)
-	. = ..()
-	START_PROCESSING(SSobj, src)
-	AddComponent(/datum/component/butchering, 50, 100)
-
-/obj/item/nullrod/tribal_knife/Destroy()
-	STOP_PROCESSING(SSobj, src)
-	. = ..()
-
-/obj/item/nullrod/tribal_knife/process()
-	slowdown = rand(-2, 2)
-
-
 /obj/item/nullrod/pitchfork
 	icon_state = "pitchfork0"
 	lefthand_file = 'icons/mob/inhands/weapons/polearms_lefthand.dmi'