I've reduced (but not cut out) processed carbs and sugars (bread and other wheat products, flavoured yoghgurts, etc) and have upped my intake of the natural carbs, sugars, iron and other nutrients that you get from fruit and vegetables.
Having said that, I have a bowl of muesli each morning mixed with 0% fat Greek-style or natural yoghurt and various fruits such as bananas, raspberries etc, and the night before a long and/or hilly ride I have a bowl of pasta with lots of veggies and sometimes with chopped up sausage or chicken.
If I don't have enough fruit and vegetables, my energy levels suffer more than if I don't have the cards. The more I try to find out what works for me (balancing weight, fitness and a few dietary/medical issues that need to be addressed), the more I realise that the key is the old mantra - all things in moderation, "as part of a healthy, balanced diet", etc etc etc.