Regularly remove organizations that do not have any links to Licenses

Purpose/Overview:

If an organization is added to a License, an Org record is created. If the link between the License and the Org is later removed, and there are no remaining licenses using that Org, there is no mechanism for removing that Org record

The impact on the user is that when searching for licenses, if you choose to filter by Organisation the list of Organizations can include Organizations that are not used by any License

Scenario 1:

• Given: an organization record 
• Where: the organisation is
  • not linked to a license (part of a LicenseOrg)
• Then: the organization (Org) record should be deleted as part of the regular license Housekeeping tasks

Dev task breakdown

• New method in cleanup service to be created as a part of ERM-1731
• HQL query (or queries) to find all Orgs where the id of the org is not used on a license

• • Likely multiple queries
  • Initial query to find all Org ids, then for each:

• • • Check count of LicenseOrg with that org attached
    • If count > 0, discard
  • Should be left with a list of Org ids it's safe to try and delete
  • Delete them all