remove logging

Author: ThomasKranitsas

src/services/ChallengeService.js

@@ -1277,9 +1277,6 @@ async function validateWinners (winners, challengeId) {
  * @returns {Object} the challenge with given id
  */
  async function getChallengeStatistics (currentUser, id) {
-   console.log('*****************')
-   console.log(currentUser)
-   console.log('*****************')
    const challenge = await getChallenge(currentUser, id)
   // for now, only Data Science challenges are supported
   if (challenge.type !== 'Challenge' && challenge.track !== 'Data Science') {