A vandal etched a swastika on a doorframe of an Upper East Side Jewish eatery on Tuesday. A tenant in the building on E. 75th St. and First Ave. spotted the hate symbol and notified the owners of 2nd Ave. Deli. Jack Lebewohl, whose brother Abe opened the deli’s first location in the East Village in 1954, told the Daily News the discovery was shocking, but not unbelievable. “I learned a long time ago that I don’t question the motives of anti-Semites and vicious people,” said Lebewohl, 75. “I don’t have to give them an excuse to attack Jews. They...