One-time Real Housewife and Donald J. Trump appointee Siggy Flicker is selling her “renovated from the dunes up” Hamptons home for $11.6 million, preferring a place closer to the president, The Post has learned. Flicker is bringing her own “Art of the Deal” approach to the sale, looking for a nearly $6 million profit even after rapid-fire price cuts since listing the home less than three months ago. Flicker now spends most of her time in Florida at her Boca Raton residence, about a 35-minute