A drug-dealer who successfully scored a $125,000 stop and frisk settlement was shot and killed by a robber on Staten Island Tuesday night after bragging about the windfall, sources said. Kenrick Gray, 34, was brutally blasted in the head around 6:15 p.m. outside 140 Park Hill Avenue in Stapleton after flaunting his riches in recent months, police said. His pal, Noland Whistleton, 41, was also fatally shot in the leg and torso during the botched robbery, cops said. Police collared suspect Darren Brown, 27, cowering in the shower of his girlfriend’s Staten Island home Wednesday afternoon in connection with the...