Caitlyn Jenner won’t be making her reality show comeback anytime soon. The 74-year-old former Olympian was scrubbed from her son Brandon Jenner’s reality show after she threatened to take legal action, RadarOnline.com has learned. Caitlyn became an angry parent after discovering she not only made a cameo in an episode — but they were hawking her name to sell the series. Brandon is Caitlyn’s 42-year-old son, whom she shares with her second wife, Linda Thompson. Sources shared the show is called At Home With the Jenners on UnchainedTV and is about three episodes in. Caitlyn was featured in a din…