no more inject default MathJax config

Author: archmoj

src/core.js

@@ -8,9 +8,6 @@ require('native-promise-only');
 // inject plot css
 require('../build/plotcss');
 
-// inject default MathJax config
-require('./fonts/mathjax_config')();
-
 // include registry module and expose register method
 var Registry = require('./registry');
 var register = exports.register = Registry.register;