no longer need to configure MathJax due to yihui/hugo-lithium@2838faa

exampleSite/content/about.md

@@ -56,14 +56,6 @@ There are two layout files under `layouts/partials/` that you may want to overri
 
 ```html
 <script src="//yihui.name/js/math-code.js"></script>
-<script type="text/x-mathjax-config">
-MathJax.Hub.Config({
-  tex2jax: {
-    inlineMath: [['$','$'], ['\\(','\\)']],
-    processEscapes: true
-  }
-});
-</script>
 <script async src="//cdn.bootcss.com/mathjax/2.7.1/MathJax.js?config=TeX-MML-AM_CHTML">
 </script>
 

exampleSite/content/post/2016-02-14-hello-markdown.md

@@ -29,7 +29,7 @@ There are many differences in syntax between Blackfriday's Markdown and Pandoc's
 - [ ] ...
 - [ ] Profit!
 
-Similarly, Blackfriday does not support LaTeX math and Pandoc does. I have added the MathJax support to this theme ([hugo-xmin](https://github.com/yihui/hugo-xmin)) but there is a caveat for plain Markdown posts: you have to include math expressions in a pair of backticks (inline: `` `$ $` ``; display style: `` `$$ $$` ``), e.g., `$S_n = \sum_{i=1}^n X_i$`.^[This is because we have to protect the math expressions from being interpreted as Markdown. You may not need the backticks if your math expression does not contain any special Markdown syntax such as underscores or asterisks, but it is always a safer choice to use backticks. When you happen to have a pair of literal dollar signs inside the same element, you can escape one dollar sign, e.g., `\$50 and $100` renders "\$50 and $100".] For R Markdown posts, you do not need the backticks, because Pandoc can identify and process math expressions.
+Similarly, Blackfriday does not support LaTeX math and Pandoc does. I have added the MathJax support to this theme ([hugo-xmin](https://github.com/yihui/hugo-xmin)) but there is a caveat for plain Markdown posts: you have to include math expressions in a pair of backticks (inline: `` `$ $` ``; display style: `` `$$ $$` ``), e.g., `$S_n = \sum_{i=1}^n X_i$`.^[This is because we have to protect the math expressions from being interpreted as Markdown.] For R Markdown posts, you do not need the backticks, because Pandoc can identify and process math expressions.
 
 When creating a new post, you have to decide whether the post format is Markdown or R Markdown, and this can be done via the `rmd` argument of the function `blogdown::new_post()`, e.g.
 

exampleSite/layouts/partials/foot_custom.html

@@ -1,12 +1,4 @@
 <script src="//yihui.name/js/math-code.js"></script>
-<script type="text/x-mathjax-config">
-MathJax.Hub.Config({
-  tex2jax: {
-    inlineMath: [['$','$'], ['\\(','\\)']],
-    processEscapes: true
-  }
-});
-</script>
 <script async src="//cdn.bootcss.com/mathjax/2.7.1/MathJax.js?config=TeX-MML-AM_CHTML"></script>
 
 <script async src="//yihui.name/js/center-img.js"></script>