fix: Remove broken config

docs/source/conf.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-# -*- coding: utf-8 -*-
 #
 # PyMISP documentation build configuration file, created by
 # sphinx-quickstart on Fri Aug 26 11:39:17 2016.
@@ -444,7 +443,3 @@ epub_exclude_files = ['search.html']
 # If false, no index is generated.
 #
 # epub_use_index = True
-
-
-# Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/': None}