HARRISBURG, Pa. — The Pennsylvania Senate on Tuesday approved two procedural measures needed to stage an impeachment trial for Philadelphia District Attorney Larry Krasner, the latest step in an unprecedented effort to remove the city’s prosecutor from office. The resolutions set the rules of the trial, which is expected to begin in January, and said the Senate will formally accept the impeachment articles on Wednesday. The rules passed the Republican-controlled chamber, 30-20, largely along party lines, despite objections by Democrats, who cast the impeachment drive as procedurally unconstitu…