It stopped being used as of #781.
```
$ rg ci-setup.sh --stats
0 matches
$ git-content-search ci-setup.sh
e7da63f update to newer hatchet integration
M .travis.yml
576def4 fix travis dependency blocker
M .travis.yml
$ git show e7da63f | rg ci-setup.sh -C 1
-before_install:
- - sudo bash etc/ci-setup.sh
+ - bundle exec hatchet ci:setup
```
Hatchet embeds its own setup script, which is called via the rake task:
https://github.com/heroku/hatchet/blob/v6.0.0/etc/ci_setup.rb
Closes @W-7923930@.
[skip changelog]