Remove custom inline syntax highlighting

Author: melund

conf.py

@@ -55,7 +55,6 @@ def tagged_commit():
     "sphinx.ext.githubpages",
     # 3rd party extensions
     # 'sphinxcontrib.fulltoc',
-    "inline_highlight",
     "IPython.sphinxext.ipython_console_highlighting",
     "sphinx.ext.intersphinx",
     # 'sphinx.ext.autosectionlabel'