remove "tests are passing" checkbox

Author: HonkingGoose

.github/PULL_REQUEST_TEMPLATE.md

@@ -21,7 +21,6 @@ Thanks again!
 <!-- Share artifacts of the changes, be they code snippets, GIFs or screenshots; whatever shares the most context. -->
 
 ### Check off the following:
-- [ ] All of the tests are passing.
 - [ ] I have reviewed my changes in staging. (look for the **deploy-to-heroku** link in your pull request, then click **View deployment**)
 - [ ] For content changes, I have reviewed the [localization checklist](https://github.com/github/docs/blob/main/contributing/localization-checklist.md)
 - [ ] For content changes, I have reviewed the [Content style guide for GitHub Docs](https://github.com/github/docs/blob/main/contributing/content-style-guide.md).