Remove a comment from conf.py

Change-Id: I675f7e8fc5dd2143eab74901bc7241e02e37285f

docs/source/conf.py

diff --git a/docs/source/conf.py b/docs/source/conf.py
index dfe808a..544e142 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -91,7 +91,6 @@
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-#html_theme = 'flask'
 html_theme = 'sphinx_rtd_theme'
 
 # Theme options are theme-specific and customize the look and feel of a theme