Exclude github.com in linkcheck (#1556)

Author: StanFromIreland

conf.py

@@ -84,18 +84,9 @@
     r'\/.*',
 ]
 
-# Check the link itself, but ignore anchors that are added by JS
-# https://www.sphinx-doc.org/en/master/usage/configuration.html#confval-linkcheck_anchors_ignore_for_url
-linkcheck_anchors_ignore_for_url = [
-    # GitHub
-    r'https://github.com/.*',
-]
-
 linkcheck_ignore = [
-    # The voters repo is private and appears as a 404
-    'https://github.com/python/voters',
-    # The python-core team link is private, redirects to login
-    'https://github.com/orgs/python/teams/python-core',
+    # Checks fail due to rate limits
+    r'https://github.com/.*',
     # The Discourse groups are private unless you are logged in
     'https://discuss.python.org/groups/staff',
     'https://discuss.python.org/groups/moderators',