'American Horror Story' Star Gets KILLED on House Sale ... Loses $1 Million

'American Horror Story' Star Gets KILLED on House Sale ... Loses $1 Million: "American Horror Story" star Morris Chestnut is in real-estate HELL ... he just unloaded his Hidden Hills, CA home, and got screwed out of a million bucks in the process. The 43-year-old actor bought the 5,522 square-foot digs back in 2007 for a…