Soccer-Costa dropped but Chelsea still toothless in Spurs draw

(Updates with details and quotes) LONDON, Nov 29 (Reuters) - Jose Mourinho dropped his disgruntled main striker Diego Costa for Chelsea's Premier League visit to Tottenham Hotspur on Sunday but the champions still proved toothless up front as they ground out an undistinguished goalless draw at White Hart Lane. The Chelsea manager said before the game that his out-of-sorts Spanish striker was lacking confidence and Costa certainly did not look a happy soul when, late on, he realised he was not going to be brought on as a substitute. It landed at Mourinho's feet.