I really doubt that will help the bandwidth at all, since you will not be using them anyway. And if it does, the difference is going to be so small that you would not notice even if you were a robot yourself.
On the other hand by disabling unnecessary resources, you save up on IRQs, avoiding potential problems (conflicts, etc) and a little bit of memory.
Bottom line: disable them and see if everything is alright. If it is, leave it as is. But i doubt you will see any speed improvements.