**Acceptance criteria**

* Remove the Enterprise token from the multi-select custom fields for work Begin of the insertionpackages.End of the insertion Begin of the deletion packages. End of the deletion
* Remove the Enterprise banner from the "New custom field" creation flow in the administration settings.
* Remove the references to the multi-select custom fields being an enterprise add-on from the docs.
* Remove the multi-select custom fields from the list of Enterprise add-ons in the pricing web page. Begin of the insertion
* Adapt tests to no longer test for enterprise token existence
* Remove any superfluous en.yml translation keysEnd of the insertion