SÃO PAULO—Seven-time world champion Lewis Hamilton was disqualified from Friday’s qualifying session at the Brazilian Grand Prix after a technical infringement by Mercedes in the latest blow to the British driver’s defense of his Formula One title. The stewards’ decision forces Hamilton to start last in Saturday’s sprint race at Interlagos in 20th position. Mercedes said it would not appeal the decision. On a dramatic day, Hamilton’s rival, Red Bull’s Max Verstappen, was fined after the Dutch driver was seen touching the rear wing of the Mercedes car. The sprint race will determine the grid for Sunday’s main race in which Hamilton will start at best in sixth due to a separate five-place penalty for Mercedes changing the car’s engine in São Paulo. Verstappen leads Hamilton by 19 points in the standings with four races left this season. Hamilton beat the Dutchman by more than 0.4 seconds in qualifying for …