LONDON (Reuters) – Prince William evoked his late mother Princess Diana’s work for charity, as he described as “eye-opening” selling copies on a London street of a magazine that helps to combat homelessness, saying he was committed to highlighting the problem. William, second in line to the British throne, was spotted in early June standing on a Westminster Street as a vendor for the “Big Issue”, which is sold by homeless people in Britain as a way of earning money. “I was 11 when I first visited a homeless shelter with my mother, who in her own inimitable style was determined to shine a light…