removed togglebutton

doc/source/conf.py

@@ -35,8 +35,6 @@ release = '0.0.1alpha'
 # ones.
 extensions = ["recommonmark",
               "sphinx_copybutton",
-              # "sphinx_togglebutton",
-              # "sphinx_exec_code",
               "sphinx.ext.autodoc",
               "sphinx.ext.napoleon",
               "sphinx.ext.viewcode",