Remove Redundant Card Key Function

Card Key (for Silph Co. doors) has two functions in-game. One of them, in engine\items\item_effects.asm, is bugged and always jumps to ItemUseNotTime.

engine\items\item_effects.asm:

...
	dw UnusableItem      ; BIKE_VOUCHER
	dw ItemUseXAccuracy  ; X_ACCURACY
	dw ItemUseEvoStone   ; LEAF_STONE
-	dw ItemUseCardKey    ; CARD_KEY
+	dw UnusableItem      ; CARD_KEY
	dw UnusableItem      ; NUGGET
	dw UnusableItem      ; ??? PP_UP
	dw ItemUsePokedoll   ; POKE_DOLL
...
...
	set USING_X_ACCURACY, [hl] ; X Accuracy bit
	jp PrintItemUseTextAndRemoveItem

-; This function is bugged and never works. It always jumps to ItemUseNotTime.
-; The Card Key is handled in a different way.
-ItemUseCardKey:
-	xor a
-	ld [wUnusedD71F], a
-	call GetTileAndCoordsInFrontOfPlayer
-	ld a, [GetTileAndCoordsInFrontOfPlayer]
-	cp $18
-	jr nz, .next0
-	ld hl, CardKeyTable1
-	jr .next1
-.next0
-	cp $24
-	jr nz, .next2
-	ld hl, CardKeyTable2
-	jr .next1
-.next2
-	cp $5e
-	jp nz, ItemUseNotTime
-	ld hl, CardKeyTable3
-.next1
-	ld a, [wCurMap]
-	ld b, a
-.loop
-	ld a, [hli]
-	cp -1
-	jp z, ItemUseNotTime
-	cp b
-	jr nz, .nextEntry1
-	ld a, [hli]
-	cp d
-	jr nz, .nextEntry2
-	ld a, [hli]
-	cp e
-	jr nz, .nextEntry3
-	ld a, [hl]
-	ld [wUnusedD71F], a
-	jr .done
-.nextEntry1
-	inc hl
-.nextEntry2
-	inc hl
-.nextEntry3
-	inc hl
-	jr .loop
-.done
-	ld hl, ItemUseText00
-	call PrintText
-	ld hl, wd728
-	set 7, [hl]
-	ret

-INCLUDE "data/events/card_key_coords.asm"

ItemUsePokedoll:
	ld a, [wIsInBattle]
	dec a
...

Now, just delete data/events/card_key_coords.asm.