[Pharo 8.0] Build #342: Remove last usage of PackageChecker

There is a new Pharo build available!
 
The status of the build #342 was: SUCCESS.

The Pull Request #3541 was integrated: "Remove last usage of PackageChecker"
Pull request url: https://github.com/pharo-project/pharo/pull/3541

Issue Url: https://github.com/pharo-project/pharo/issues/3540
Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/Pharo8.0/342/