Deletes Jump Clients from one or more duplicate groups. Accepts either an explicit
list of ids or a list of system_identifiers; the two are mutually exclusive.

• When ids is supplied, the listed Jump Clients are deleted. The request fails with
  422 Unprocessable Entity if the set would remove every Jump Client in any
  duplicate group — at least one client must remain in each group. Pass
  allow_delete_all: true to lift this guard and let the set empty entire groups.
• When system_identifiers is supplied, every Jump Client in each named duplicate
  group is deleted except one survivor per group. The survivor is chosen as the most
  recently connected client, falling back to the most recently deployed client when
  connection times tie. Pass allow_delete_all: true to delete every Jump Client in
  every supplied group — no survivors are kept.

The API account must have the Duplicate Jump Clients Reports permission.
Accounts without it receive 403 Forbidden.