a77c552485
Remove aws cli install. All runner images have the AWS CLI 2 installed, so there isn't a really strong reason to install our own version anymore. The version we were installing was 1.27.122. The runner images currently have 2.11.x (the exact version varies by image). I do not have the means to really test if the new version has any issues. I looked at all the `aws` commands, and none of them seem to be doing anything unusual. The page at https://docs.aws.amazon.com/cli/latest/userguide/cliv2-migration-changes.html contains a list of all the breaking changes, and I didn't see anything that looked important.