Vasana Montgomery -- one of the announced cast members for season 8 of "Love Island USA" -- has already been kicked off the show ... TMZ has learned, after allegedly using a racial slur. Here's the deal ... videos surfaced online which appear to show the contestant from Beaverton, Oregon using the n-word. In one clip, Montgomery appears to say it while rapping along to a song ... while, in another, she yells it out while her friend is playing an arcade game. Production sources tell TMZ ...