remove console.log that I added when the MathJax start

Author: geyang

lib/mj-page.js

@@ -621,7 +621,6 @@ function StartQueue() {
 //  and load a new one (get a fresh MathJax)
 //  
 function RestartMathJax() {
-  console.log('MathJax is restarting...');
   if (timer) {
     MathJax.Hub.queue.queue = [];  // clear MathJax queue, so pending operations won't fire
     MathJax = timer = null;