PYTHON-2658 Remove NPS survey (#615)

(cherry picked from commit 1390283)

Author: ShaneHarvey

doc/conf.py

@@ -91,13 +91,6 @@
 # Additional static files.
 html_static_path = ['static']
 
-# These paths are either relative to html_static_path
-# or fully qualified paths (eg. https://...)
-# Note: html_js_files was added in Sphinx 1.8.
-html_js_files = [
-    'delighted.js',
-]
-
 # The name for this set of Sphinx documents.  If None, it defaults to
 # "<project> v<release> documentation".
 #html_title = None