Remove jest tests from gitlab-ci

Right now the jest tests are not doing very much and are sometimes breaking when dependencies change. In the future, it is probably a good idea to have jest tests, but we should use them for unit tests instead of testing the app now that we have Cypress component tests which actually run in the browser instead of node.

For now, this merge requests just removes the jest tests from the gitlab-ci pipeline.

requested review from @imretoth and @zoltanrunyo

assigned to @johnsparger

approved this merge request

mentioned in commit 3a25ea14

merged