Minor update to conf.py to disable Sphinx warning

docs/source/conf.py

@@ -58,7 +58,7 @@
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+# html_static_path = ['_static']
 
 # -- External links for repeated use:
 ual_re = 'https://github.com/UAL-RE'