Remove MathJax support

This functionality has been extracted into its own bundle: https://github.com/noniq/Markdown-MathJax.tmbundle

See textmate/bundle-support.tmbundle#19 (comment) ff. for rationale.

Commands/Markdown preview.plist

@@ -41,24 +41,6 @@ TextMate::HTMLOutput.show(:title => "Markdown Preview", :sub_title => ENV[
   end
 
   io << lines.join("\n")
-  if ENV["TM_MARKDOWN_MATHJAX"].to_i > 0
-      io << %{
-        <script type="text/x-mathjax-config">
-          MathJax.Hub.Config({
-            extensions: ["tex2jax.js"],
-            jax: ["input/TeX", "output/HTML-CSS"],
-            tex2jax: {
-              inlineMath: [ ["$","$"], ["\\\\(","\\\\)"] ],
-              displayMath: [ ["$$","$$"], ["\\\\[","\\\\]"] ],
-              processEscapes: false
-            },
-            "HTML-CSS": { availableFonts: ["TeX"] }
-          });
-        </script>
-        <script type="text/javascript" src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
-        </script>
-      }
-  end
   io << "\n<script>window.location.hash = \"scroll_to_here\";</script>"
 end