A longstanding legal firm serving former President Donald Trump’s campaign and businesses is seeking to withdraw from a lengthy case because of “irreparable breakdown in the attorney-client relationship,” according to a new report and court records. The firm LaRocca, Hornik, Greenberg, Rosen, Kittridge, Carlin and McPartland on Friday requested to remove itself from a lawsuit filed by a campaign surrogate who said the campaign sidelined her in 2016 after she revealed she was pregnant, the New York Times was first to report. “The timing of the motion was notable,” the Times notes, “just two day…