Disable docs lint internal_links check

This check never worked once the global navigation changes were rolled
out in https://gitlab.com/gitlab-com/gitlab-docs/merge_requests/362. The
global nav will ALWAYS include /ce and /ee links, and the CE and EE
repos will never include documentation for both.  gitlab-docs now
expects the documentation to be in the following directories:

* /tmp/gitlab-docs/ce (CE)
* /tmp/gitlab-docs/ee (EE)
* /tmp/gitlab-docs/omnibus (Omnibus)

The problem is that the CE and EE repos will only include one of the
first two.

Let's disable this check until
https://gitlab.com/gitlab-com/gitlab-docs/issues/305 is resolved.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/55038

.gitlab-ci.yml

@@ -555,7 +555,8 @@ docs lint:
     # Build HTML from Markdown
     - bundle exec nanoc
     # Check the internal links
-    - bundle exec nanoc check internal_links
+    # Disabled until https://gitlab.com/gitlab-com/gitlab-docs/issues/305 is resolved
+    # - bundle exec nanoc check internal_links
 
 downtime_check:
   <<: *rake-exec