Just file the tabs off. Carefully. I had to do the same on my Lotus Classique, which was originally spec'ed with Shimano 600 Arabesque parts. Those cable stops will cover the bare metal, but it would be a good idea to use some touchup paint (nail polish would be the best bet for that metallic color) just so it doesn't rust.
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If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.