Remove balanceBraces from tex2jax (no longer needed, and never implemented anyway). Resolves issue #1871

Author: dpvc

unpacked/config/default.js

@@ -296,19 +296,6 @@ MathJax.Hub.Config({
       ['$$','$$'],
       ['\\[','\\]']
     ],
-
-    //
-    //  This value determines whether tex2jax requires braces to be
-    //  balanced within math delimiters (which allows for nested dollar
-    //  signs).  Set to false to get pre-v2.0 compatibility.  When true,
-    //  
-    //      $y = x^2 \hbox{ when $x > 2$}$.
-    //  
-    //  will be properly handled as a single expression.  When false, it
-    //  would be interpreted as two searpate expressions, each with 
-    //  improperly balanced braces.
-    // 
-    balanceBraces: true,
 
     //
     //  This array lists the names of the tags whose contents should not be

unpacked/extensions/tex2jax.js

@@ -39,10 +39,6 @@ MathJax.Extension.tex2jax = {
       ['\\[','\\]']            //  be sure that you don't have an extra comma at the end)
     ],
 
-    balanceBraces: true,       // determines whether tex2jax requires braces to be
-                               // balanced within math delimiters (allows for nested
-                               // dollar signs).  Set to false to get pre-v2.0 compatibility.
-
     skipTags: ["script","noscript","style","textarea","pre","code","annotation","annotation-xml"],
                                // The names of the tags whose contents will not be
                                // scanned for math delimiters