If you set Camera Raw's sharpening to zero (i.e., Amount = 0 in Detail tab), then CR doesn't apply sharpening.
At least, that's the way I see it.
One can get into a deep low-level discussion of whether or not a demosaic algorithm (or any type of image processing) is applying sharpening. Any time a program needs to perform interpolation (e.g., interpolating missing color values for a Bayer camera, i.e., vast majority of digital images shot in the world), the choice of method used to perform that interpolation could be argued to have some sharpening applied.