You probably just reduced your calorie intake. There is scant evidence that those sources of carbs matters at all in the sense that they are somehow worse than other sources of calories. But fair play to you for doing something. It's genuinely admirable.
One type of macro food group affects insulin resistance. Carbs. All calories are not created equal, just ask any diabetic (and there are many many of them to ask).
We're talking about cutting out a food category and presumably replacing it with another. I don't know of any convincing evidence this results in weight loss. Open to information of course!
As far as I'm aware there are no studies that clearly show that replacing potatoes bread etc with equivalent calories in other forms results in weight loss.
