Gwyneth Paltrow is reportedly selling her Los Angeles mansion for nearly $30 million after her youngest child Moses graduated from high school. The 51-year-old actress turned Goop founder – who recently spoke of her fears of having an empty nest – bought the 8,000-square-foot mansion for $9.95 million in 2012 while married to her now-ex-husband, Coldplay frontman Chris Martin, 47, with whom she has daughter Apple, 20, as well as her 18 year old son Moses. Listing agent Lea Porter told the Wall Street Journal Gwyneth is now looking to downsize from the eight-bedroom, 11-bathroom home, built in …