fix math

_layouts/post.html

@@ -22,18 +22,3 @@ layout: default
     </div>
   </article>
 </section>
-
-<!-- MathJax -->
-<script type="text/x-mathjax-config">
-  MathJax.Hub.Config({
-    tex2jax: {
-    inlineMath: [['$','$'], ['\\(','\\)']],
-    displayMath: [['$$','$$'], ['\[','\]']],
-    processEscapes: false,
-    processEnvironments: false,
-    skipTags: ['script', 'noscript', 'style', 'textarea', 'pre', 'a']
-  }
-});
-</script>
-<script type="text/javascript" async src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.2/MathJax.js?config=TeX-AMS_SVG">
-</script>