Removed reference use case article. The article documents using Jira Smart…

Merged Mike McLaughlin requested to merge tweak-jira-int-doc into master

See the general Documentation guidelines

What does this MR do?

Our current Jira integration documentation references an article which instructs the user to use techniques that our current integration does not support. This MR is to remove the reference to that article.

(briefly describe what this MR is about)

Moving docs to a new location?

See the guidelines:

  • Make sure the old link is not removed and has its contents replaced with a link to the new location.
  • Make sure internal links pointing to the document in question are not broken.
  • Search and replace any links referring to old docs in GitLab Rails app, specifically under the app/views/ directory.
  • If working on CE, submit an MR to EE with the changes as well.