A student-athlete at Gettysburg College allegedly scratched a racial slur on a swim teammate’s chest with a box cutter in a disturbing incident that has sparked an investigation at the small Pennsylvania liberal arts college, according to school officials and one of the swimmer’s families.   The student who wrote out the slur on his peer’s body is reportedly no longer with the school and the student with the etched word on him was initially barred from swimming for the small school...