Don't think so.
If it is zero fee, how to charge AF and what amount?

Unless this is waiver with conditions, then maybe.

Having said that, if you have a credit card that you do not need for past 12 months, there is no reason keeping it, too.

Just make it simple, how many cards you have in hand?
If yes, how many of them are cash back cards?
If you are holding cash back cards, do they able to cover all of your transactions?
I have 5 credit cards, with 3 of them are cash back cards, most of my transactions are covered by the cash back cards, but some spending like in the hard ware shops are not, this is when the dual cards come handy.
And on the AF, as long as those small fonts never stated, they can't simple charge even you don't use the card. If really worry too much, just make a small transaction.

The answer is NO for this card.

AmEx always. It rewards 5 points for every rm1 spent while visa rewards only 1 point for every rm1.