Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
This card is treated as a Normal Monster while face-up on the field or in the GY. While this card is a Normal Monster on the field, you can Normal Summon it to have it become an Effect Monster with this effect. ● At the start of the Damage Step, if this card attacked a Special Summoned monster: You can banish that monster.
--業火の重騎士
--Heavy Knight of the Flame
local s,id=GetID()
function s.initial_effect(c)
	Gemini.AddProcedure(c)
	--Banish attacked monster
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetCategory(CATEGORY_REMOVE)
	e1:SetType(EFFECT_TYPE_SINGLE+EFFECT_TYPE_TRIGGER_O)
	e1:SetCode(EVENT_BATTLE_START)
	e1:SetCondition(s.descon)
	e1:SetTarget(s.destg)
	e1:SetOperation(s.desop)
	c:RegisterEffect(e1)
end
function s.descon(e,tp,eg,ep,ev,re,r,rp)
	local c=e:GetHandler()
	if not Gemini.EffectStatusCondition(e) or Duel.GetAttacker()~=e:GetHandler() then return false end
	local bc=c:GetBattleTarget()
	return bc and bc:IsSpecialSummoned() and bc:IsAbleToRemove()
end
function s.destg(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return true end
	Duel.SetOperationInfo(0,CATEGORY_REMOVE,e:GetHandler():GetBattleTarget(),1,0,0)
end
function s.desop(e,tp,eg,ep,ev,re,r,rp)
	local bc=e:GetHandler():GetBattleTarget()
	if bc:IsRelateToBattle() then
		Duel.Remove(bc,POS_FACEUP,REASON_EFFECT)
	end
end