Pope Francis has decided to punish one of his highest-ranking critics, Cardinal Raymond Burke, by revoking his right to a subsidized Vatican apartment and salary in the second such radical action against a conservative American prelate this month, according to two people briefed on the measures. Francis told a meeting of the heads of Vatican offices last week that he was moving against Burke because he was a source of “disunity” in the church, said one of the participants at the Nov. 20 meeting. Francis said he was removing Burke’s privileges of having a subsidized Vatican apartment and salary as a retired cardinal because he was using the privileges against the church, said another person who was subsequently briefed on the pope’s measures.