Deleting a domain from the list of allowed collaboration domains will remove the
ability for collaborations to be created between your enterprise and users in
To remove a domain from the allowed list, supply the ID of the list entry to
the delete request. This ID is returned when allowing a new domain
or listing the allowed domains in the enterprise;
curl -i -X DELETE "https://api.box.com/2.0/collaboration_whitelist_entries/213123" \
-H "Authorization: Bearer <ACCESS_TOKEN>"