Leave it to Ozzy Osbourne to label a ridiculous pop sensation like Sanjaya Malakar “a hairstyle-challenged idiot.” An insider told Page Six Osbourne was confirmed to perform on last week’s finale of “American Idol,” but canceled at the last minute “when he learned he would have to do a duet with Sanjaya. Ozzie said he didn’t want to be onstage with that idiot.” Fox ended up pulling Steve Perry from Aerosmith to do the somewhat embarrassing duet with the artist ...