fix(statistics): remove infinite logging (#2180)

modules/statistics/statistics.js

 Statistics.sendLog = function(m) {
     const globalSubSet = new Set();
 
-    logger.log(m);
-
     // FIXME we don't want to duplicate logs over P2P instance, but
     // here we should go over instances and call this method for each
     // unique conference ID rather than selecting the first one.