There are methods to remove the human voice from a piece of audio, but your success rate is going to depend on how the song was mixed, and whether or not the voice sample has gone through any kind of filtering itself (probably has for this song). You may also lose non-vocal audio, which could ruin the music. There's also the possibility of looping a section of the song that doesn't have the voice sample. Prodigy pieces are usually pretty simple looped patterns, and with a little bit of effort you could probably do it with Audacity.
Of course, I don't really agree with editing a song because you found one part of it offensive. Find another song. It's not like there aren't millions out there. I know when I hear a censored version of a song and I'm familiar with the original, it feels weird, fake. But that's just my opinion.
