Well, isn't this something? First the Tekken 3 (Arcade/PlayStation) music samples (from Eddy Gordo and Jin Kazama's stages) placed in the N64 original (Jin's theme was removed from the XBOX version), now this:

Considering Conker's adult nature and Satoshi Tajiri's wish to never have Pokemon overtly violent, I am not surprised this was removed by Nintendo's order (confirmed by Chris Seavor). I also wouldn't be surprised if Tajiri saw this and ended up less than pleased, considering Nintendo still allowed Conker to even be released.