Remove unused and unnecessary packages in esv-intersection

[GuillaumeVix]

Description

When new packages have been implemented, the old ones have not always been removed. We might also have unnecessary packages that is not important and can be removed.

Acceptance criteria

List the key points after which the engineering task can be considered done.

1. remove unused packages
2. remove unnecessary packages
3. if a removal is 'too big' or 'too time consuming' create follow-up user stories

[VRiveland]

Did not remove the changesets package or it's setup. This could be in use until intersection gets the new automatic package publishing setup. I suggest we remove the changesets once the automatic publishing is set up