“The most excellent diss on Drake’s “Duppy Freestyle” is wordless. It comes early in the song, before he launches into line after line of saucy beef aimed back at Pusha-T after his references to Drake’s use of a ghostwriter on “Infrared,” released yesterday. “I’m in shock. The nerve. The audacity,” Drake says, thick with faux outrage. And then he lets loose a big old exasperated sigh. Do I really h”