What Audionut said.
But just to point out, you cannot turn off white balance.
You can set the RGB multipliers all to 1.0, but this will give you a green image, as there are the same amount of green pixels as there are red and blue combined.
It means less noise in the green. This is actually a good thing because eyes are more sensitive to green, and would also help with green screen.
If you set the RGB to 2.0, 1.0, 2.0, this is essentially "white balance turned off", however it causes images to look disgusting. Also, ML doesn't set the multipliers precisely so it will actually be 1.9, 1.0, 1.9 or something like that. Regardless you don't want it.
AutoWB is actually quite good, and should be used in most cases. If you don't want to use AutoWB, take a grey card with you and WB using ML for every photo you take.