By Ryan Merrifield Kensington Palace posted a sweet Mother’s Day photo of Princess Kate with her kids as she continues to recuperate after surgery – but hours later picture agencies pulled the snap. The “kill notice” was issued to media organisations across the globe by the Press Association (PA), Associated Press (AP), Reuters, Agence France-Presse (AFP) and Getty Images, and all confirmed they had pulled the image from their libraries. The snap – which was said to have been taken by Prince William – shows Kate, 42, with kids Prince George, 10, Princess Charlotte, eight, and Prince Louis, fiv…