DOC: remove unnecessary (and wrong) source_suffix setting

Author: mgeier

docs/source/conf.py

@@ -85,7 +85,6 @@
 # The suffix(es) of source filenames.
 # You can specify multiple suffix as a list of string:
 # source_suffix = ['.rst', '.md']
-source_suffix = ['.rst', '.ipynb']
 
 # The encoding of source files.
 #source_encoding = 'utf-8-sig'