KABUL, Afghanistan — The acting head of women’s affairs in Laghman Province in eastern Afghanistan was shot to death in daylight on Monday as she was traveling to work.It was the second time in less than six months that the person holding that post has been assassinated. In the latest attack, two assailants on a motorcycle gunned down Najia Sediqi, the acting head, as she was getting into a rickshaw in Mehtar Lam, the provincial capital, according to Ahmad Gul Baidar, the head of administrative affairs for the women’s department.